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应用化学专业英语课文翻译.doc

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应用化学专业英语课文翻译.doc

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文档介绍:应用化学专业英语课文翻译
应用化学专业英语课文翻译
应用化学专业英语课文翻译
1。3 THE PERIODIC LAW
周期律
    In 1869, Dmitri Ivanovitch Mendeleev (1834-1907) of Russia and Lothar Meyer (1830—1895) of Germany independently published their periodic arrangements of the elements. Both of these periodic arrangements were based on increasing atomic weights。
译:1869年,俄罗斯的德米特里·伊万诺维奇门捷列夫(1834年至1907年)和德国的洛萨迈耶(1830至1895年)。
  At the time of Mendeleev's periodic table, about 63 elements were known. The brilliance and foresightedness of this work can be seen by the fact that Mendeleev left spaces between certain elements in his original table and predicted that these spaces would be filled by the discovery of new elements. He left a space for an undiscovered element after calcium and called the element eka-boron; another space was left under aluminum, which he called eka-aluminum; and another space under silicon, which he called eka-silicon. The term “eka” comes from Sanskrit meaning “one,” which Mendeleev used to indicate that the missing element was one place away in his table from the element indicated. Mendeleev even went so far as to predict, with high accuracy, the physical and chemical properties of those elements yet to be discovered. The three elements above were, in fact, discovered within his lifetime. Scandium (atomic number 21) was discovered in 1879 by Lars F。 Nilson(184