【正文】 n Atomic power for oceangoing vessels is already a reality.n 原子能動力用于遠洋船只已經(jīng)成為現(xiàn)實。n This is a kind of alloy with high strength.n 這是一種具有高強度的合金。n The shaft turns about its axis.n 軸圍繞軸線轉(zhuǎn)動。n So long as we have means of producing heat we can keep the steam engine at work.n 只要能產(chǎn)生熱，就能使蒸汽機做功。n Usually the working parts of the machines are made from carbon steels.n 通常，機器的工作部件是用碳素鋼制造的。轉(zhuǎn)換成漢語名詞n 動詞轉(zhuǎn)換成名詞n Neutrons act differently from protons.n 中子的作用不同于質(zhì)子。n Gases differ from solids in that the former have greater pressibility than the latter.n 氣體和固體的區(qū)別在于前者比后者有更大的可壓縮性。n The electronic puter is chiefly characterized by its accurate and rapid putations.n 電子計算機的主要特點是計算準(zhǔn)確而快速。n The Center is running a series of talks on the relationship between science and literature, in which poets and scientists discuss how scientific ideas over the past two centuries have influenced literature and social change.n 這個中心正在舉辦關(guān)于科學(xué)與文學(xué)關(guān)系的系列討論會。與會的詩人和科學(xué)家們的討論議題是：在過去兩個多世紀(jì)里科學(xué)思想對文學(xué)和社會變革的影響。n Mercury weighs about thirteen times as much as water.n 水銀的重量約為水的十三倍。n The net and electronic merce will foster a large number of freefancers, and this will affect social structure in a big way.n 網(wǎng)絡(luò)和電子商業(yè)將會造就一大批自由職業(yè)者，從而將對社會結(jié)構(gòu)產(chǎn)生深遠的影響。n PCs gave the world a whole new way to work, play and municate.n 個人計算機使整個世界更新了工作、娛樂和通訊方式。n He aims to bee a puter expert.n 他的目標(biāo)是當(dāng)一名計算機專家。n In the life process, the animal works in the opposite way to the plant.n 在生命過程中，動物的活動方式與植物相反。n An electric current varies directly as the electromotive force and inversely as the resistance.n 電流的變化與電動勢成正比，與電阻成反比。n 形容詞轉(zhuǎn)換成名詞n Both the pounds are acids, the former is strong and the latter weak.n 這兩種化合物都是酸，前者是強酸，后者是弱酸。n The atmosphere is only about eleven kilometers thick.n 大氣的厚度約為11000米。n People are so much more flexible and inventive than robots.n 人類比機器人更靈活而且更富有創(chuàng)造性。n In fission processes the fission fragments are very radioactive.n 在裂變過程中，裂變碎片的放射性很強。n The more carbon the steel contains, the harder and stronger it is.n 鋼含碳量越高，強度和硬度就越大。n The electrolytic process for producing hydrogen is not so efficient as the thermochemical process.n 用電解法生產(chǎn)的效率不象熱化學(xué)法那樣高。n Ice is not as dense as water and it therefore floats.n 冰的密度比水小，因而能浮在水面上。n The different production cost is closely associated with the sources of power.n 生產(chǎn)成本的差異與能源密切相關(guān)。n Glass is more soluble than quartz.n 玻璃的可溶性比石英大。n At constant temperature, the pressure of a gas is inversely proportional to its volume.n 溫度不變，則氣體壓力和體積成反比。n 代詞轉(zhuǎn)換成名詞n Radio waves are similar to light waves except that their wavelength is much greater.n 無線電波與光波相似，只不過無線電波的波長要長一些。n We need frequencies even higher than those we call very high frequency.n 我們所需要的頻率，甚至比我們稱作高頻率的還要高。n Air density decreases as the temperature goes up and it increases when it gets colder.n 氣溫升高時，空氣密度就減小；空氣變冷時，空氣密度就增大。n According to a growing body of evidence, the chemicals that make up many plastics may migrate out of the material and into foods and fluids, ending up in your body.n 越來越多的證據(jù)表明，許多塑料制品的化學(xué)成分會移動到食物或流體上去，最終進入人體內(nèi)。n Though we cannot see it, there is air all around us.n 雖然我們看不見空氣，可我們周圍到處都有空氣。n One would fall all the way down to the center of the earth without gravity.n 如果沒有引力，人們就會一直掉到地球的中心。n For nearly two thousand years it was mistakenly believed that all heavy objects fell faster than light ones.n 在長達兩千年的時間里，人們都認(rèn)為一切重物都比輕物落得快。這種觀念是錯誤的。n The volume of the sun is much larger than that of the earth. n 太陽的體積比地球的體積大得多。n The most mon acceleration is that of free falling bodies.n 最普通的加速度是自由落體加速度。n Energy can neither be created, nor destroyed, although its form can be changed.n 盡管能量的形式可以轉(zhuǎn)換，但能量既不能被創(chuàng)造，有不能被消滅。n 副詞轉(zhuǎn)換成名詞n Such magnetism, because it is electrically produced, is called electromagnetism.n 由于這種磁性產(chǎn)生于電，所以稱為電磁。n Oxygen is one of the important elements in the physical world, it is very actively chemically.n 氧是物質(zhì)世界的重要元素之一，其化學(xué)性能很活潑。n The quality of the operating system determines how useful the puter is.n 操作系統(tǒng)的質(zhì)量決定著計算機的應(yīng)用效能。n The equations below are derived from those above.n 下面的這些方程式是由上面的那些方程式推導(dǎo)出來的。n The puter is shown schematically on this page.n 這一頁是計算機的簡圖。n India has the software skills and thousands of software developers who are Englishspeaking and technically proficient.n 印度擁有軟件設(shè)計方面的技術(shù)，而且擁有成千上萬能說英語、精通技術(shù)的軟件工程師。n A look ahead gives petroleum an exciting role in the world of tomorrow.n 展望未來可以看到石油將在世界上起到令人鼓舞的作用。n The image must be dimensionally correct.n 圖形的尺寸必須正確。n The only naturally occurring substance used as fuel for nuclear power is U235.n 在自然界所存在的物質(zhì)中，只有鈾235可以用作獲得核能的材料。n It was not until early 40’s that chemists began to use the technique analytically.n 直到40年代初，化學(xué)家們才開始將這種技術(shù)用于分析工作。轉(zhuǎn)換成漢語形容詞n 副詞轉(zhuǎn)換成形容詞n Nitric acid is an extremely reactive agent.n 硝酸是一種強烈的反應(yīng)劑。n The wide application of electronic puters affects tremendously the development of science and technology.n 廣泛應(yīng)用電子計算機，對科學(xué)技術(shù)的發(fā)展有極大的影響。n Amphibians and birds do differ significantly.n 兩棲類和鳥類之間有顯著的差別。n While tallness is evidently a hereditary characteristic, any individual’s actual height depends on the interaction between their genes and the environment.n 雖然身高是一種明顯的遺傳特征，但是個體的實際身高則取決于基因和環(huán)境的相互作用。n This new electronic puter is chiefly characterized by its simplicity of structure.n 這種新型的電子計算機的主要特點是結(jié)構(gòu)簡單。n Robotics is so closely associated with cybernetics that it is sometimes mistakenly considered to be synonymous.n 機器人技術(shù)與控制論的聯(lián)系如此密切，以致兩者有時被錯誤地認(rèn)為是同一回事。n The engineer had prepared meticulously for his design.n 工程師為這次設(shè)計作了十分周密的準(zhǔn)備。n Gases conduct best at low pressures.n 氣體在低壓下導(dǎo)電性最佳。n The puter exhibition impressed us deeply.n 計算機展覽會給我們留下了深刻的印象。n The universal lathe is most widely used and plays an important part in industry.n 萬能車床得到了最廣泛的使用，所以在工業(yè)上起著重要的作用。n 名詞轉(zhuǎn)換成形容詞n Electronic puters and microprocessors are of great importance to us.n 電子計算機和微處理器對我們來說都十分重要。n The nuclear power system designed in Chi