| 释义 |
同位素量tóngwèisùliàng元素的同位素以原子质量单位为标准的相对质量。元素按其所含各种同位素的百分组成求得的平均同位素量,就是该元素的原子量。{isotopic mass; relative mass of an isotope of an element in terms of the element's atomic mass unit. An element's atomic weight is the average of the various isotopic masses in consideration of the isotopes' respective percentage composition.} |