分页标题
2011-09-20 16:26:00 来源：网络整理 双击单词自动翻译
作文地带导读：Certainly not grams, or the isotopes would be a lot bigger than they are. Atomic weights have the unit amu, or atomic mass unit, and one atomic mass unit is equal to 1.6605410-24 g.
（责任编辑：申月月）
相关热词搜索：Atomic We Structure—What Today
分享到：
