1.英語科學(xué)小知識(shí)
1. bat an eye (show surprise, fear, or interest) 眨一下眼睛（表示驚訝、恐懼等）該成語通常用于否定句中，表示不露聲色。
例：Tom told his story without batting an eye, although not a world of it was true.雖然沒有一句話是真的，湯姆編造故事卻面不改色。2. be all fingers and thumbs做事笨手笨腳例：He could not undo the string of the parcel ---- she was all fingers and thumbs.他怎么也解不開包袱上的繩子 ---- 真是笨手笨腳。
3. be born with a silver spoon in one's mouth (born with inherited privilege or wealth) 門第高貴；出生富豪[注] 銀具是富裕人家身份的象征之一，生在富貴人家的孩子多用銀匙 （silver spoon） 喂食。 例：When does she know about hardship ---- she was born with a silver spoon in her mouth.她根本就不知道什么叫艱難 ---- 他出生在富貴人家。
4. be in sth. up to one's neck (be very much and very seriously involved in) 深陷于。
中例：She said she knew nothing about the robbery, but I'm sure she's in it up to her neck.她說她對(duì)這起搶劫案一無所知，不過我敢肯定她深深卷入其中。5. bite the hand that feeds one (be very ungrateful) 忘恩負(fù)義；以怨報(bào)德例：She felt that her protégé had bitten the hand that fed him by making unkind remarks about her in public.她覺得她的被保護(hù)人在公開場(chǎng)合講有損她的話是忘恩負(fù)義。
6. bite off sb's nose (scold sb. severely; disagree with sb. in a bad manner) 氣勢(shì)洶洶地回答某人；聲色俱厲地訓(xùn)斥某人[注] 也作snap off sb's head。該成語最早出現(xiàn)于16世紀(jì)。
到了18世紀(jì)，有人用動(dòng)詞 snap 替換該成語中的 bite 一詞。例：She bites off his nose on the faintest provocation.不管有事無事，她動(dòng)不動(dòng)就聲色俱厲地訓(xùn)斥他。
7. break the back of sth. (complete the heaviest or most difficult part of sth. hurt the most import part) 門第高貴；出生富豪[注] 銀具是富裕人家身份的象征之一，生在富貴人家的孩子多用銀匙 （silver spoon） 喂食。同義語有be born in （或to） the pruple; be radled in purple.例：Now that you've broken the back of the job, have a rest.你既然已經(jīng)完成了這項(xiàng)工作的主要部分，那就休息一下吧。
8. bury one's head in the sand (deliberately ignore sth. that is obvious but unpleasant) 逃避現(xiàn)實(shí)；拒絕承認(rèn)現(xiàn)實(shí)[注] 鴕鳥遇到危險(xiǎn)時(shí)，總是把頭埋在沙里，自己看不見敵人就認(rèn)為敵人也看不見自己，由此產(chǎn)生這一成語。例：He had suspected for some months that his son was taking drugs, but he had buried his head in the sand and refused to admit it, even to himself.幾個(gè)月來，他一直懷疑自己的兒子在吸毒，但他卻采取鴕鳥政策，拒絕承認(rèn)現(xiàn)實(shí)。
9. carry a chip on one's shoulder (have rather an aggressive manner, as if always expecting to be insulted, ill-treated) 以挑釁的態(tài)度出現(xiàn)；像要跟人家打架似的[注] 19世紀(jì)中葉美國(guó)中西部的居民尋釁打架時(shí)，常把一塊碎木片（chip）放在肩膀上，誰要與他打架就得先擊落這塊木片。例：He is very difficult to deal with ---- he's always carried a chip on his shoulder about his lack of education.他這個(gè)人很難對(duì)付----由于沒能受到良好的教育，他整天都像要跟人家打架似的。
10. chance one's arm (do sth. risky; take a risk) 冒險(xiǎn)一試；碰碰運(yùn)氣[注] 該成語原出自拳擊運(yùn)動(dòng)，后被裁縫吸收為行話；從1890年起，又被士兵們用來指“冒降級(jí)的險(xiǎn)”例：The manager decided to chance his arms and try to write a book on economy.這個(gè)經(jīng)理決定碰碰運(yùn)氣，試著寫一本關(guān)于經(jīng)濟(jì)的書。
2.急求：關(guān)于科技節(jié)的英文文章
科技節(jié)轟轟烈烈的結(jié)束了。
仿佛是剛過完一個(gè)喜慶的節(jié)日，又仿佛是參加完了一個(gè)豐富的學(xué)習(xí)課程?？萍脊?jié)中各項(xiàng)比賽的設(shè)計(jì)，我們的同學(xué)構(gòu)思大膽、創(chuàng)新，而且還能兼顧設(shè)計(jì)的美觀性！這是在院前小學(xué)敢為人先，勇爭(zhēng)第一環(huán)境的孕育下，同學(xué)們所慢慢形成的一種自我的風(fēng)格。
在“雞蛋撞地球”這個(gè)項(xiàng)目中，同學(xué)們的設(shè)計(jì)新穎奇特，而且能巧妙的運(yùn)用輕質(zhì)的材料保護(hù)雞蛋不受損。在環(huán)保時(shí)裝設(shè)計(jì)中，同學(xué)們既擔(dān)當(dāng)設(shè)計(jì)師又擔(dān)當(dāng)模特兒，而且制作這些精美時(shí)裝的材料都是運(yùn)用一些平日里不起眼，被我們認(rèn)為是廢品所遺棄的物品，讓我驚訝于同學(xué)們的心靈手巧，驚訝于每位設(shè)計(jì)師們的匠心獨(dú)具！同學(xué)們都把自己的知識(shí)運(yùn)用于自己的創(chuàng)作中！在科技節(jié)中，同學(xué)們平日藏在骨子里的潛力盡情的展現(xiàn)出來，就像是火光一般耀眼！我親身參與的是“中國(guó)排球永不落”，在比賽中我明白到團(tuán)隊(duì)的合作是很重要的，要完成一個(gè)工作，往往需要很多人一同去努力，每個(gè)人完成任務(wù)中的不同部分，在把這些看似零散的部分合在一起，才能成功。
光靠一個(gè)人孤軍奮戰(zhàn)往往不能取得很好的成績(jī)?？萍脊?jié)教會(huì)我們理性的思維方法，培養(yǎng)了我們的環(huán)保能力，也培養(yǎng)了我們的科學(xué)素養(yǎng)、與人合作的能力，真是受益非淺！感激老師對(duì)我們的悉心指導(dǎo)和幫助，感謝學(xué)校為我們提供了這個(gè)大舞臺(tái)讓我們能自由的發(fā)揮想象，自由的讓才華盡現(xiàn)，自由的學(xué)習(xí)了，成長(zhǎng)了。
Science and technology festival ended with vigour and vitality. It is just after afestive holiday, it seems that the attended a rich learning courses. DesignScience Festival in the games, our classmates boldly conceived, innovation, but also beautiful design! This is in pre hospital primary school dare be a person first, inoculation courage first environment, a self style students slowly formed. In the "egg hit the earth" this project, design students of the novel, but also material protection using light egg clever is not damaged. In the environmental protectionin fashion design, the students not only act as designers and act as models, andmaking these exquisite fashion materials are using some weekdaysinconspicuous, we think it is the abandoned waste items, let me surprised the students have clever hands and good sense, surprised at each designers have great originality! The students are applying knowledge of their own in their owncreation! In the technology section, students usually hidden in the bones of thepotential to show out, like the general dazzling! I personally involved in the"Chinese volleyball will never fall", in the game I understand that teamwork is very important, to complete a work, often need a lot of people together tocomplete the task, each person in different parts, in these seemingly fragmentedparts together, to be successful. One person alone fight a lone battle is often unable to obtain good results. Science and technology festival teaches us a rational way of thinking, cultivate our environmental capacity, but also ability of scientific literacy, cooperate with us, really benefit not shallow! Thanks to our teacher's careful guidance and help, thank the school provides the stage for usso that we can imagine the freedom, freedom let the talent show, freedom to learn, grow up.今天，我校以“眼到，手到，發(fā)現(xiàn)，創(chuàng)造”為主題，舉辦了首屆科技節(jié)。 這天的天氣特別好，好像是為了這次科技節(jié)預(yù)定的一樣。
我懷著激動(dòng)的心情來到了學(xué)校，同學(xué)們的臉上都洋溢著歡樂的笑容。一進(jìn)入校園，一股“科技風(fēng)”就迎面吹來，四周掛滿了同學(xué)們的科技畫和科技作文。
其中，我還看到了我的科技畫呢！后面參加節(jié)目的小選手們也躍躍欲試，想向大家展示自己的勞動(dòng)成果呢！ 科技節(jié)正式開始了，本次科技節(jié)請(qǐng)到了許多領(lǐng)導(dǎo)參加。等主持人說完了開場(chǎng)白，一位領(lǐng)導(dǎo)宣布：“濟(jì)南市小辛莊小學(xué)首屆科技節(jié)現(xiàn)在開幕！”“嘩！”同學(xué)們都報(bào)以熱烈的掌聲。
首先是為科技畫和科技作文的獲獎(jiǎng)?wù)哳C獎(jiǎng)，被念到名字的同學(xué)欣喜若狂，沒有被念到名字的同學(xué)有些失望。雖然我沒有獲獎(jiǎng)，但是看到獲獎(jiǎng)同學(xué)捧著獎(jiǎng)狀時(shí)開心的笑容，我真是從心底為他們高興。
接著是同學(xué)的科技成果展示。大家發(fā)明的東西既科學(xué)又實(shí)用，而且很實(shí)用。
其中，最令我感興趣的是一個(gè)二年級(jí)的小男孩發(fā)明的“動(dòng)力發(fā)射器”，不由得讓在場(chǎng)的老師和同學(xué)們發(fā)出贊嘆。然后表演的是在市級(jí)獲得四項(xiàng)獎(jiǎng)項(xiàng)的科普劇——《小水滴》。
在小演員的表演和解說同學(xué)的解說下，讓大家了解了水滴是怎樣變成雨的過程。其中，還有我們班的小演員呢！咦，怎么一化妝每個(gè)人都長(zhǎng)得差不多呀？經(jīng)過我的仔細(xì)尋找，終于在最后一排找到她了。
小演員們婀娜的舞姿和動(dòng)聽的音樂使同學(xué)們陶醉，她們表演完之后，贏得了大家熱烈的掌聲。 科技節(jié)在大家的掌聲和歡笑聲中落幕，這次科技界讓我們了解了更多科技知識(shí)，它會(huì)在我的記憶深處畫上一道美麗的弧線。
Today, my school with "eyes, hands to create, 。
3.科普英語的內(nèi)容
暗銀河系的發(fā)現(xiàn)及其科學(xué)意義 In addition to conventional galaxies, the universe contains very dim galaxies that until recently went unnoticed by astronomers. Possibly as numerous as conventional galaxies, these galaxies have the same general shape and even the same approximate number of stars as a common type of conventional galaxy, the spiral, but tend to be much larger. Because these galaxies 'mass is spread out over larger areas, they have far fewer stars per unit volume than do conventional galaxies. Apparently these low-surface-brightness galaxies, as they are called, take much longer than conventional galaxies to condense their primordial gas and convert it to stars—that is, they evolve much more slowly. These galaxies may constitute an answer to the long-standing puzzle of the missingbaryonic mass in the universe. Baryons—subatomic particles亞原子粒子 that are generally protons or neutrons—are the source of stellar, and therefore galactic, luminosity, and so their numbers can be estimated based on how luminous galaxies are. However, the amount of helium in the universe, as measured by spectroscopy光譜學(xué)， suggests that there are far more baryons in the universe than estimates based on galactic luminosity indicate. Astronomers have long speculated that the missing baryonic mass might eventuallybe discovered in intergalactic space星系際的空間 or as some large population of galaxies that are difficult to detect. -------------------------------另類海豹哺乳方式與眾不同 Until recently, zoologists believed that all species of phocids (true seals), a pinnipped family, use a different maternal strategy than do otariids (fur seals andsea lions), another pinniped family. Mother otariids use a foraging strategy. They acquire moderate energy stores in the form of blubber before arriving at breeding sites and then fast for 5 to 11 days after birth. Throughout the rest of the lactation (milk production) period, which lasts from 4 months to 3 years depending on the species, mother otariids alternately forage at sea, where they replenish their fat stores, and nurse their young at breeding sites. Zoologists had assumed that females of all phocids species, by contrast,use a fasting strategy in which mother phocids, having accumulated large energy stores before they arrive at breeding sites, fast throughout the entire lactation period, which lasts from 4 to 50 days depending on the species. However, recent studies onharbor seals, a phocids species, found that lactating females commenced foragingapproximately 6 days after giving birth and on average made 7 foraging trips during the remainder of their 24-day lactation period. The maternal strategy evolved by harbor seals may have to do with their small size and the large proportion of their fat stores depleted in lactation. Harbor seals are small compared with other phocids species such as grey seals, all of which are known to fast for the entire lactation period. Studies show that mother seals of these species use respectively 84 percent, 58 percent, and 33 percent of their fat stores during lactation. By comparison, harbor seals use 80 percent of their fat stores in just the first 19 days of lactation, even though they occasionally feed during this period. Since such a large proportion of their fat stores is exhausted despite feeding, mother harbor seals clearly cannot support all of lactation using only energy stored before giving birth. Though smallerthan many other phocids, harbor seals are similar in size to most otariids. In addition,there is already some evidence suggesting that the ringed seal, a phocids species thatis similar in size to the harbor seal, may also use a maternal foraging strategy.------------------------------pheromones是什么東東，是不是該劃為odorantThere is no consensus among researchers regarding what qualifies a substance as a pheromone. While most agree on a basic definition of pheromones as chemicals released by one individual of a species which, when detected by another individual of the same species, elicit a specific behavioral or physiological response, some researchers also specify that the response to pheromones must be unconscious. In addition, the distinctionbetween pheromones and odorants—chemicals that are consciously detected as odors---can be blurry, and some researchers classify pheromones as atype of odorant. Evidence that pheromone responses may not involve conscious odor perception comes from the finding that in many species, pheromones are processed by the vomeronasal (or accessory olfactory) system, which uses a special structure in the nose, the vomeronasal organ (VNO),。
4.科學(xué)英文手抄報(bào)
Science drink milk little common sense 5Drinking milk is good for health, but many people drink milk in still exist a number of the error on the idea, this paper introduces some scientific drinking milk little common sense.The 1 morning fasting drink milk should not be. Because the human body when fasting gastrointestinal peristalsis quickly, nutrition in milk are often too late to be absorbed quickly into the e.. In addition, big milk method is insufficient, because this will reduce in oral and salivary mixed opportunity, is not conducive to digestion and absorption. Drink milk before the best to eat some cookies, cakes, or eat snacks while drinking milk.2 night milk more favorable. Scientific studies found that, in the human body calcium metabolism will have a special rule: the evening especially midnight when the content of serum calcium, there will be a" trough", forcing the body through regulating mechanism of transport a portion of bone calcium supplement. In this way, calcium in the blood is temporarily maintained, but have reduced skeletal calcium in. Milk of calcium rich, therefore before bedtime drink a cup of milk, can compensate for human body needs calcium at night.3 milk should not be adding sugar boiling. Milk is rich in amino acids, in the condition of high temperature in the milk of lysine with sugars occurring Maillard reaction, generate a new compounds - fructosyl amino acid. This substance can not only for human digestion and absorption, but affect human health, the best milk fresh drinking, such as cold a little heating can.4 do not like milk can drink yoghurt. The milk has a" repulsive " most people with lactose intolerance, these people can try drinking yoghurt. In the yogurt lactose content significantly reduced, but almost all retain the milk nutrition, wherein the lactic acid bacteria in the human body can survive and reproduction, conducive to nutrient absorption and utilization and improve immunity. Yogurt not containing antibiotics, easy to digest the absorption to fasting drinking.5 can not be heated drinking yoghurt. Drink sour milk feeds mainly on its nutrition and live bacteria, such as yogurt heating, the body can only drink nutrition to lose biological activity of lactic acid bacteria, so don't heating after drinking.How birds sleepDuring the day, the birds in the branches through singing, fly freely in the blue sky, in the evening, they and we like to rest, sleep, restores the physical strength, but their sleeping position but each are not identical!Beautiful mallard ducks and swans, under water in daytime, and the rest of the night when the predator, also cannot leave their most loves water. They have beautiful long neck bending forward, head buried in the wings, and then let themselves floating in the water, while dreaming, and swim, is leisurely.Crane, stork, heron, long-legged bird always stand on one leg and sleep, tired to change the other foot rest, is a model.Partridge rest like swarms around in a circle, and then as head outwards inward end. In this way, regardless of the enemy from which direction the hit, they can find and run away.Thrush, Braun and other sounds melodious birds, sleep usually bent legs, claws bent up firmly grasp branches, so don't worry they will fell down from the tree.While the" night owl" birds of prey in the daytime, you can always see it open one eye, one eye closed, standing in the thick branches, in fact it is sleeping. The sleeping posture is it right? Very offbeat ah, it is in order to monitor the surrounding environment against enemy attack!= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =The fish will drown meFish have gills, can breathe water, fishes have a swim bladder, can be in the water freely ups and downs. However, some people say the fish that lives in the water will drown, is this true?Although it sounds ridiculous, but it is true. Fish is fish swimming" buoy", which can be inflated and deflated to adjust the proportion of fish body. In this way, the fish in the swimming requires only minimal muscle activity, will be in the light of floating stability. However, when the fish sink to a certain depth ( i.e." depth" ), the outside huge pressure will cause it to wither section bladder volume. At this time, it 's buoyancy less than its own gravity, so he can't help to submerged to, also do not float, and was ultimately unable to breathe and drowned. 。
5.跪求有關(guān)科技的英語小短文
Not long ago, many people believed that babies only wanted food and to be kept warm and dry. Some people thought babies were not able to learn things until they were five or six months old. Yet doctors in the United States say babies begin learning on their first day of life. The Eunice Kennedy Shriver National Institute of Child Health and Human Development is a federal government agency. Its goal is to identify which experiences can influence healthy development in human beings. Research scientists at the institute note that babies are strongly influenced by their environment. They say a baby will smile if her mother does something the baby likes. A baby learns to get the best care possible by smiling to please her mother or other caregiver. This is how babies learn to connect and communicate with other human beings。
6.求一篇關(guān)于科技的英語作文
我和北京奧運(yùn) 我盼望著2008年8月8日快點(diǎn)到來。
這是北京奧運(yùn)會(huì)開幕的日子，是世界體育大家庭聚會(huì)北京的日子，更是每一個(gè)中國(guó)人倍感驕傲的日子。 作為一個(gè)小主人，我真想成為一名光榮的奧運(yùn)志愿者，可是到了那時(shí)，我還太小，不能成為一個(gè)真正的志愿者，但是，我依然可以為北京奧運(yùn)會(huì)做出自己的貢獻(xiàn)。
首先，作為一個(gè)北京市的小市民，我要用我的熱情、我的笑容迎接每一個(gè)來自世界各地的外國(guó)朋友，展示出我們北京人友好好客的精神風(fēng)貌，讓外國(guó)朋友們通過每一張北京人的笑臉感受北京。 其次，我要更加努力的學(xué)習(xí)英語，在奧運(yùn)會(huì)舉辦期間，能夠用英語和外國(guó)朋友們說話、交流，為他們提供我力所能及的幫助，比如：做個(gè)小翻譯、幫外國(guó)人指路等等，讓外國(guó)朋友通過每一個(gè)北京人熱情的幫助喜歡北京。
再次，我也要學(xué)習(xí)更多的有關(guān)北京、奧運(yùn)的知識(shí)，將來可以為外國(guó)朋友介紹咱們美麗的北京，以及北京悠久的歷史和燦爛的文化，要讓他們通過和每一個(gè)北京人的交流更加了解北京，了解中國(guó)。 最后，我還要?jiǎng)訂T我身邊的每一個(gè)同學(xué)，大家一起學(xué)習(xí)文明禮儀，一起加強(qiáng)和宣傳環(huán)保意識(shí)，為北京奧運(yùn)會(huì)辦成一個(gè)真正的“綠色奧運(yùn)、人文奧運(yùn)、科技奧運(yùn)”從我做起、從現(xiàn)在做起。
“同一個(gè)世界，同一個(gè)夢(mèng)想”，我希望我的夢(mèng)想能夠變?yōu)楝F(xiàn)實(shí)。 Olympic Games and me I am looking forward the Beijing Olympics on August 8, 2008 very much. This is the opening cenemony of the Beijing Olympic Games, and the day the world sports family gathering together, as well as the day Chinese people are really proud of. As a small master, I really want to become a glorious Olympic volunteer, but I still too little to really become a volunteer. But I can still make contributions to the Beijing Olympic Games. First of all, as a citizen of Beijing, I will use my enthusiasm and smile to greet every foreign friends from all over the world, and to show off our Beijingers' friendly and hospitable spirit so that every foreign friends will know the city by the faces. Next, I want to learn English harder so that during the Olympics I could speak to foreign friends and community in English, And do my best to help them, For example, be a little translator and to help foreigners when they ask way. Let them know China by the behaviors of us. Again, I would like to learn more about Beijing's Olympic and for the future to our foreign friends knowing more about our beautiful Beijing, as well as the long history and splendid culture, I would like to mobilize each and every one of my classmates, we will study together and civilize。
7.需要一篇英語科技小文章大約1000詞左右,不用翻譯,謝了
From size, it usually generate significant changes in chemical and physical properties of small particle size in 0.1 microns (note 1 m = 100 centimeters, 1 centimeter = 10,000 microns, 1 micron = 10 nanometers, 1 nano = 10 ella), namely below 100 nanometers. Therefore, particle size in 1 ~ 100 nanometer particles called ultra fime grain materials, is also a kind of nanometer materials. Nano metal material is the middle of 1980s, then the successful development of field contains nano semiconducting film, nano ceramic, nano CiXing materials and nano biomedical materials. Nanoscale structure material referred to as the nanometer material (nano material), is to show its structure unit size between 1 nano ~ 100 nanometer range between. Because of its size is close to electronic coherence length, and its nature because strong coherent brings the self-organization makes properties change greatly. And, its scale has come close to the wavelength of light, plus its surface with large special effect, thus its display properties, such as melting point, magnetic, optical, heat conductivity, conductive properties etc, often is different from the substance in overall state behavior of nature. Nanoparticles material called utrasmall particle materials from the nanoparticles (nano distinguish) composition. Nanoparticles also called utrasmall particle size, generally means within 1 ~ 100nm between particles, is in atom clusters and macro objects at the junction of the transition region, from the macro and micro usually on the viewpoint, this system not only atypical microscopic system also atypical macroscopic systems, is a kind of typical mesoscopic system, has the surface effect, small size effect and the macroscopic quantum tunneling effect. When people put the macro object subdivided into utrasmall particle (nanometer level), it will display a lot of exotic characteristics, namely its optical, heat, electricity, magnetic, mechanical and chemical properties of solid and bulky than when there will be significant different.Nanotechnology generalized range including nano materials technology and nano machining technology, nano measurement technology, nano application technology, etc. One nanometer material technology focuses on nano functional material production (superfine powder, coating, nano modified materials etc), performance testing technology (chemical composition, microstructure and surface morphology and geophysical, geochemical and electric, magnetic and optical properties, such as heat and). Nano machining technology contains precision machining technology (energy beam machining, etc) and scanning probe techniques. Nanomaterials has certain uniqueness, when matter scale small to certain degree, then have to switch to quantum mechanics to replace traditional mechanical view to describe its behavior, when powder particles size by 10 micron drop to 10 nano, its size is changed for 1,000 times, but converted volume is ten nine 4k times the giant, so both behavior will generate obvious difference. Nanoparticles are different from large physical reason is in the surface area of the relative increase, namely utrasmall particle surface was full of ladder shape structure, the structure with high surface can represent the unrest atoms. This kind of atomic extremely easily with foreign atomic adsorption of bonding, at the same time because narrow particle size and provides large surface activity of atoms. It is melting point, nano powder due to each particle constituent atoms less, surface atomic in instability, make its surface lattice vibration amplitude of the bigger, so has the high surface energy, causing utrasmall particle unique thermal property, also is caused by melting down, as nano powder will than traditional powder easy in low temperature sintering and become good sintering promote materials從尺寸大小來說，通常產(chǎn)生物理化學(xué)性質(zhì)顯著變化的細(xì)小微粒的尺寸在0.1微米以下（注1米=100厘米，1厘米=10000微米，1微米=1000納米，1納米=10埃），即100納米以下。
因此，顆粒尺寸在1~100納米的微粒稱為超微粒材料，也是一種納米材料。 納米金屬材料是20世紀(jì)80年代中期研制成功的，后來相繼問世的有納米半導(dǎo)體薄膜、納米陶瓷、納米瓷性材料和納米生物醫(yī)學(xué)材料等。
納米級(jí)結(jié)構(gòu)材料簡(jiǎn)稱為納米材料（nano material），是指其結(jié)構(gòu)單元的尺寸介于1納米~100納米范圍之間。由于它的尺寸已經(jīng)接近電子的相干長(zhǎng)度，它的性質(zhì)因?yàn)閺?qiáng)相干所帶來的自組織使得性質(zhì)發(fā)生很大變化。
并且，其尺度已接近光的波長(zhǎng)，加上其具有大表面的特殊效應(yīng)，因此其所表現(xiàn)的特性，例如熔點(diǎn)、磁性、光學(xué)、導(dǎo)熱、導(dǎo)電特性等等，往往不同于該物質(zhì)在整體狀態(tài)時(shí)所表現(xiàn)的性。
8.有趣的英語小知識(shí)
英語趣味測(cè)試：成語對(duì)對(duì)碰 俚語和諺語是英語學(xué)習(xí)中的一大絆腳石。
這些英語句子一反常態(tài)，我們不明白這些俗語的含義，是因?yàn)槲覀兒陀⒄Z國(guó)家的文化背景不同。如果能在漢語中為這些俗語找到對(duì)應(yīng)的說法，問題就解決了。
看看下面的句子你能翻譯對(duì)幾個(gè)來。 1.After meat, mustard; after death, doctor Explanation: this describes a situation where assistance or comfortis given when it is too late。
Example: just as I had cancelled my application to go abroad, I hada promise of money for my fare. It was a case of after death, thedoctor。 2.After praising the wine they sell us vinegar Explanation: to offer to give or sell something that is inferior towhat you claim it to be。
Example: that fellow completely misled us about what he was capableof doing. After praising the wine, he sold us vinegar。 3.All is over but the shouting Explanation: finally decided or won; brought to the end; not ableto be changed。
Example: after Bill's touch down, the game is all over butshouting。 4.All lay load on the willing horse Explanation: a willing horse is someone who is always doing thingsfor others. Very often the implication is that others impose onhim。
Examples: the trouble is you're too good-natured and people takeadvantage of it. all lay load on the willing horse. You will haveto learn to refuse people who ask too much。 5.anger and haste hinder good counsel Explanation: one can not act wisely when one is angry or in ahurry。
Example: you should calm down before you decide the next move.Anger and haste hinder good counsel。 6.As poor as a church mouse Explanation: to be exceedingly poor, having barely to liveupon。
Example: he has a large family, and is poor as a churchmouse。 Note: a church is one of the few buildings that contain nofood。
7.A word spoken is past recalling Explanation: the harm done by a careless word can not easilyundo。 Example: for the rest of his life he regretted what he had said,but a word spoken is past recalling and he knew he could neverrepair the damage of that moment of harshness。
8.World is but a little place, after all Explanation: it is used when a person meets someone he knows or isin someway connected with him in a place where he would never haveexpected to do so。 Example: Who would have thought I would bump into an old schoolmateon a trek up Mount Tai. The world is but a little place afterall。
9.When in Rome, do as the Romans do Explanation: conform to the manners and customs of those amongstwhom you live。 Example: I know you have egg and bacon for breakfast at home, butnow you are on the Continent you will do as the Romans do and takecoffee and rolls。
10.What you lose on the swings you get back on theroundabouts Explanation: a rough way of starting a law of average; if you havebad luck on one day you have good on another; if one ventureresults in loss try a fresh one---it may succeed。 Example: he may always possess merits which make up for everything;if he loses on the swings, he may win on the roundabouts。
11.What are the odds so long as you are happy Explanation: what does anything else matter if a person ishappy。 Example: you complain so much, but you have a good family, parents,health, and money. What's the odd so long as you're happy。
12.Entertain an angel unawares Explanation: to receive a great personage as a guest withoutknowing his merits。 Example: in the course of evening someone informed her that she wasentertaining an angel unawares, in the shape of a composer of thegreatest promise 13.every dog has his day Explanation: fortune comes to each in turn Example: they say that every dog has his day; but mine seems a verylong time coming。
14.every potter praises his own pot Explanation: people are loath to refer to defects in theirpossessions or their family members Example: he said that his teacher considered his work brilliant,but I would rather hear it from his teacher's own mouth. Everypotter praises his own pot 答案： 1.雨后送傘 2. 掛羊頭賣狗肉 3. 大勢(shì)已去 4.人善被人欺，馬善被人騎 5. 小不忍則亂大謀 6. 一貧如洗 7. 一言既出，駟馬難追 8. 天涯原咫尺，到處可逢君 9. 入鄉(xiāng)隨俗 10. 失之東隅，收之桑榆 11. 知足者常樂 12. 有眼不識(shí)泰山 13.是人皆有出頭日 14.王婆買瓜，自賣自夸 送花須知：十二星座的幸運(yùn)花 Aries: Thistle, wild rose, gorse, nasturtium, woodbine 白羊：薊、野玫瑰、金雀花、旱金蓮花、忍冬 Taurus: Lily of the valley, violet, red rose, myrtle 金牛：鈴蘭、紫羅蘭、紅玫瑰、桃金娘 Gemini: Snapdragon, iris 雙子：金魚草、愛麗絲 Cancer: Poppy, water lily, white rose 巨蟹：罌粟、荷花、白玫瑰 Leo: Marigold, sunflower, cowslip, heliotrope, 。
9.科技對(duì)學(xué)習(xí)的影響 英語作文
The Effects of Technology on Learning The technological advances of the last few years have been amazing. Never before have students had such a wide variety of resources to help them in their studies. Those who can take advantage of these resources have the opportunity to learn about more subjects and to acquire more in-depth knowledge. In my opinion, students can indeed learn more and learn more quickly with the help of modern technology. The piece of technology most important as a learning tool must be the computer. Paired with the Internet, it allows students to research topics more quickly and thoroughly and to write up their findings more rapidly as well. Furthermore, advances in many fields are being made so fast these days that it is impossible four textbooks to keep up. Technology allows students to keep abreast of the latest developments. Also, it cannot be denied that many students enjoy using such resources in their studies. Because of this, they are more likely to pursue subjects in greater depth. For all these reasons, I believe that technology is of great benefit to today's students. Of course, it is still possible to learn without the aid of such devices, but I believe that those students who are fortunate enough to have access to technological resources should take every advantage of them.。
10.英語小常識(shí)
sporting house 妓院（不是“體育室”） dead president 美鈔（上印有總統(tǒng)頭像）（并非“死了的總統(tǒng)”） lover 情人（不是“愛人”） busboy 餐館勤雜工（不是“公汽售票員”） busybody 愛管閑事的人（不是“大忙人”） dry goods （美）紡織品；（英）谷物（不是“干貨”） heartman 換心人（不是“有心人”） mad doctor 精神病科醫(yī)生（不是“發(fā)瘋的醫(yī)生”） eleventh hour 最后時(shí)刻（不是“十一點(diǎn)”） blind date （由第三者安排的）男女初次會(huì)面（并非“盲目約會(huì)”或“瞎約會(huì)”） personal remark 人身攻擊（不是“個(gè)人評(píng)論”） sweet water 淡水（不是“糖水”或“甜水”） confidence man 騙子（不是“信得過的人”） criminal lawyer 刑事律師（不是“犯罪的律師”） service station 加油站（不是“服務(wù)站”） rest room 廁所（不是“休息室”） dressing room 化妝室（不是“試衣室”或“更衣室”） horse sense 常識(shí)（不是“馬的感覺”） capital idea 好主意（不是“資本主義思想”） familiar talk 庸俗的交談（不是“熟悉的談話”） black tea 紅茶（不是“黑茶”） black art 妖術(shù)（不是“黑色藝術(shù)”） black stranger 完全陌生的人（不是“陌生的黑人”） white coal （作動(dòng)力來源用的）水（不是“白煤”） white man 忠實(shí)可靠的人（不是“皮膚白的人”） yellow book 黃皮書（法國(guó)政府報(bào)告書，以黃紙為封）（不是“黃色書籍”） red tape 官僚習(xí)氣（不是“紅色帶子”） green hand 新手（不是“綠手”） blue stocking 女學(xué)者、女才子（不是“藍(lán)色長(zhǎng)統(tǒng)襪”） China policy 對(duì)華政策（不是“中國(guó)政策”） Chinese dragon 麒麟（不是“中國(guó)龍”） American beauty 一種玫瑰，名為“美國(guó)麗人”（不是“美國(guó)美女”） English disease 軟骨?。ú皇恰坝?guó)病”） Indian summer 愉快寧靜的晚年（不是“印度的夏日”） Greek gift 害人的禮品（不是“希臘禮物”） Spanish athlete 吹牛的人（不是“西班牙運(yùn)動(dòng)員”） French chalk 滑石粉（不是“法國(guó)粉筆”）。
