兰州大学出版社-化学专业外语备课+全文翻译

兰州大学出版社-化学专业外语备课+全文翻译
兰州大学出版社-化学专业外语备课+全文翻译

化学专业英语(修订版)翻译

01 THE ELEMENTS AND THE PERIODIC TABLE 01 元素和元素周期表 The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The number of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom is determined very nearly by the total number of protons and neutrons in its nucleus. This total is called the mass number, A. The number of neutrons in an atom, the neutron number, is given by the quantity A-Z. 质子的数量在一个原子的核被称为原子序数,或质子数、周淑金、电子的数量在一个电中性原子也等于原子序数松山机场的总质量的原子做出很近的总数的质子和中子在它的核心。这个总数被称为大量胡逸舟、中子的数量在一个原子,中子数,给出了a - z的数量。 The term element refers to, a pure substance with atoms all of a single kind. T o the chemist the "kind" of atom is specified by its atomic number, since this is the property that determines its chemical behavior. At present all the atoms from Z = 1 to Z = 107 are known; there are 107 chemical elements. Each chemical element has been given a name and a distinctive symbol. For most elements the symbol is simply the abbreviated form of the English name consisting of one or two letters, for example: 这个术语是指元素,一个纯物质与原子组成一个单一的善良。在药房“客气”原子的原子数来确定它,因为它的性质是决定其化学行为。目前所有原子和Z = 1 a到Z = 107是知道的;有107种化学元素。每一种化学元素起了一个名字和独特的象征。对于大多数元素都仅仅是一个象征的英文名称缩写形式,一个或两个字母组成,例如: oxygen==O nitrogen == N neon==Ne magnesium == Mg

完整版化学专业英语

Teaching material for scientific English 一、元素和单质的命名 “元素”和“单质”的英文意思都是“element”,有时为了区别,在强调“单质”时可用“free element”。因此,单质的英文名称与元素的英文名称是一样的。下面给出的既是元素的名称,同时又是单质的名称。 1主族元素和单质: 2过渡元素和单质 Fe : iron Mn : manganese Cu: copper Zn: zinc Hg: mercury Ag: silver Au: gold 二化合物的命名: 化合物的命名顺序都是根据化学式从左往右读,这与中文读法顺序是相反的。表示原子个数时使用前缀:mono-di -tri-tetra -penta-hexa-hepta-octa-,nona-, deca-,但是在不会引起歧义时,这些前缀都尽可能被省去。 1.化合物正电荷部分的读法: 直呼其名,即读其元素名称。 如CO: carbon monoxide AlO: aluminium oxide 32NO :Di nitrogen tetroxide 42对于有变价的金属元素,除了可用前缀来表示以外,更多采用罗马数字来表示金属的氧化态,或用后缀-ous表示低价,-ic表示高价。 如FeO: iron(II) oxide 或ferrous oxide FeO: iron (III) oxide或ferric oxide 32CuO: copper(I) oxide 或cuprous oxide CuO: copper(II) oxide或cupric oxide 22.化合物负电荷部分的读法: 2.1二元化合物: 常见的二元化合物有卤化物,氧化物,硫化物,氮化物,磷化物,碳化物,金属氢化物等,命名时需要使用后缀-ide, 如:fluoride,chloride,bromide,iodide,oxide ,sulfide ,nitride, phosphide, carbide,-的

应用化学专业英语翻译完整篇

1 Unit5元素周期表 As our picture of the atom becomes more detailed 随着我们对原子的描述越来越详尽,我们发现我们陷入了进退两难之境。有超过100多中元素要处理,我们怎么能记的住所有的信息?有一种方法就是使用元素周期表。这个周期表包含元素的所有信息。它记录了元素中所含的质子数和电子数,它能让我们算出大多数元素的同位素的中子数。它甚至有各个元素原子的电子怎么排列。最神奇的是,周期表是在人们不知道原子中存在质子、中子和电子的情况下发明的。Not long after Dalton presented his model for atom( )在道尔顿提出他的原子模型(原子是是一个不可分割的粒子,其质量决定了它的身份)不久,化学家门开始根据原子的质量将原子列表。在制定像这些元素表时候,他们观察到在元素中的格局分布。例如,人们可以清楚的看到在具体间隔的元素有着相似的性质。在当时知道的大约60种元素中,第二个和第九个表现出相似的性质,第三个和第十个,第四个和第十一个等都具有相似的性质。 In 1869,Dmitri Ivanovich Mendeleev,a Russian chemist, 在1869年,Dmitri Ivanovich Mendeleev ,一个俄罗斯的化学家,发表了他的元素周期表。Mendeleev通过考虑原子重量和元素的某些特性的周期性准备了他的周期表。这些元素的排列顺序先是按原子质量的增加,,一些情况中, Mendeleev把稍微重写的元素放在轻的那个前面.他这样做只是为了同一列中的元素能具有相似的性质.例如,他把碲(原子质量为128)防在碘(原子质量为127)前面因为碲性质上和硫磺和硒相似, 而碘和氯和溴相似. Mendeleev left a number of gaps in his table.Instead of Mendeleev在他的周期表中留下了一些空白。他非但没有将那些空白看成是缺憾,反而大胆的预测还存在着仍未被发现的元素。更进一步,他甚至预测出那些一些缺失元素的性质出来。在接下来的几年里,随着新元素的发现,里面的许多空格都被填满。这些性质也和Mendeleev所预测的极为接近。这巨大创新的预计值导致了Mendeleev的周期表为人们所接受。 It is known that properties of an element depend mainly on the number of electrons in the outermost energy level of the atoms of the element. 我们现在所知道的元素的性质主要取决于元素原子最外层能量能级的电子数。钠原子最外层能量能级(第三层)有一个电子,锂原子最外层能量能级(第二层)有一个电子。钠和锂的化学性质相似。氦原子和氖原子外层能级上是满的,这两种都是惰性气体,也就是他们不容易进行化学反应。很明显,有着相同电子结构(电子分布)的元素的不仅有着相似的化学性质,而且某些结构也表现比其他元素稳定(不那么活泼) In Mendeleev’s table,the elements were arranged by atomic weights for 在Mendeleev的表中,元素大部分是按照原子数来排列的,这个排列揭示了化学性质的周期性。因为电子数决定元素的化学性质,电子数也应该(现在也确实)决定周期表的顺序。在现代的周期表中,元素是根据原子质量来排列的。记住,这个数字表示了在元素的中性原子中的质子数和电子数。现在的周期表是按照原子数的递增排列,Mendeleev的周期表是按照原子质量的递增排列,彼此平行是由于原子量的增加。只有在一些情况下(Mendeleev注释的那样)重量和顺序不符合。因为原子质量是质子和中子质量的加和,故原子量并不完全随原子序数的增加而增加。原子序数低的原子的中子数有可能比原子序数高的原

上海高考英语翻译句型总结汇总

not …until…/ Not until…/ It was not until…that 1.直到会议快要结束时他才露面。(show up) 2.直到二十世纪初人们才学会怎样防止这种疾病的蔓延。(prevent) 3.直到那时他才意识到他的老师是非常善解人意的。(considerate) 4.可惜他们直到事故发生之后才采取措施防止它。 5.直到上周末收到你的来信时我们才如释负重。(relieve) The more…the more.. 1.你的词汇量越大,你就感到用英语写作越容易。(feel it + adj. to do ) 2.人们普遍认为,用脑越多,思维就越活跃。( it is generally believed that ) 3.问题发现得越早,解决起来越容易。 4.问题越难,我越有可能能够解决他们。(likely) 5.我们学习得越多,将来就越能为我们国家工作的越好。 6.你练习讲英语越多,就越对你有好处。(do sb good) 7.我们经常讨论的一个问题是:是否钱越多越幸福。 8.相对而言,孩子与父母交流越多,越不可能感到忧郁。(suffer from) No matter how / however + adj. / adv. + S + V 1. 不管这个新体系有多复杂,我们还是要用它。(complicated) 2.无论社会发展得多快,这个传统应该代代相传。(pass on) 3.无论他如何努力,他似乎永远学不好物理。 4.不管我们有多忙,下星期我们一定会举行一次欢送会向那些退休工人们表示敬意。(in honor of) 5.不管天有多晚,他从不把今天必须做的事拖到明天。(put off) 6. 如果我们以一种强烈的意志工作,我们能够克服任何的困难,无论这个困难有多大。Adj. / adv. / n. / v. + as / though + S + V 1.虽然他很聪明,但他不愿把全部时间用在学习上。(devote…to) 2.他很累,但他还是工作到深夜。(work late into…) 3.虽然他是个孩子,但对于这个世界他了解很多。 4.虽然我敬佩他作为一个作家,但我不喜欢他作为一个人。(admire) Hardly / scarcely / barely…when no sooner …than 1.我刚到家,电话铃就响了。 2.他一到实验室,就开始做实验。(set out) 3.这男孩刚打开电脑,他父亲就回家了,叫他做功课。 4.他一到家就迫不及待地把好消息告诉他父母。(can't wait…) 1.Not until the meeting was almost over did he show up. th century did people learn how to prevent the disease from Not until the beginning of the 202. spreading. 3.Not until then did he realize that his teacher was very considerate / thoughtful / 1 understanding.

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常用分析化学专业英语词汇

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