名词
中文翻译：偶质数
同义词：
['even mass number', 'even number mass number例句：1. The even-mass number of the atom is equal to its atomic mass.（原子的偶质数等于其原子质量。）2. The even-mass number of a nucleus is related to its nuclear charge.（核子的偶质数与它的核电荷有关。）']
例句：
-
1. The even-mass number of the atom is equal to its atomic mass.
原子的偶质数等于其原子质量。
-
2. The even-mass number of a nucleus is related to its nuclear charge.
核子的偶质数与它的核电荷有关。
-
3. The even-mass number of an element is determined by its atomic weight.
元素的偶质数由其原子量决定。