| 1. | Atoms of the same element that differ in their atomic weight are called isotopes .
具有不同原子量的同一种元素被称为同位素。
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| 2. | Electrons weigh very little , so they are n't even counted in the atomic weight .
电子非常轻，因此在原子量中甚至没有计算它。
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| 3. | He forcast for the unknown elements their atomic weights and all kinds of properties .
他预言了这些未知元素的原子量和各种特性。
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| 4. | They calculated as fluently with atomic weights as they did with grammes or centimetres .
他们计算原子量就如同计算克和厘米那样娴熟。
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| 5. | The molecular weight of a molecule is the sum of the atomic weights of the constituent atoms .
一种分子的分子量就是构成它的原子成分之原子量总和。
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| 6. | In order of ascending atomic weight
以原子重量由小到大是：
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| 7. | Chemical industries . names and symbols of elements . table of relative atomic weights
化学工业.元素名称和符号.相关原子量表
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| 8. | An isotope of hydrogen with one proton and one neutron in the nucleus having an atomic weight of2 . 014
氘氢的一种同位素，在其原子核内有一个质子和一个中子，其原子重量为2 。 014
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| 9. | Isotopes are different varieties of the same element , which have identical chemical properties but differ in atomic weight
同位素是同一元素的不同种类，它们有着相同的化学特性但是原子重量不同。
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| 10. | However , you also want to include the name , symbol , atomic number , and atomic weight ; you can select each of these by using an
不过，我们还希望填充一些元素名、元素符号、元素号和原子量，可以在模板中使用
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