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1·Electrons weigh very little, so they aren'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。《新英汉大辞典》

2·All uranium atoms do not have the same atomic weight.

并非所有的铀原子都有相同的原子量。

3·It is the nearest whole number to an atom's ATOMIC WEIGHT.

它是最接近原子的原子量的整数。

4·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。

5·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。

6·A hydrogen molecule consists of only two hydrogen atoms with the same atomic weight.

氢分子仅由两个原子量相同的氢原子组成。

7·An arrangement of 56 elements in order of ascending atomic weight made by Newlands in 1863.

1863年，纽兰茨所作。他将56种元素按原子量上升次序排列。

8·The number of electrons in an atom is deduced to be approximately equal to half the atomic weight.

原子中的电子数,将近是原子质量的一般。

9·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。

10·I can't shake off the nagging sense that something is off kilter; my atomic weight is slightly altered.

我无法摆脱那种有某种东西失去平衡而令人不安的感觉，我的原子量有了轻微的改变。

原子量

1·All uranium atoms do not have the same atomic weight.

并非所有的铀原子都有相同的原子量。