“packing fraction”的概念、定义、习题解题方法及翻译-物理辞典

单词	packing fraction
释义	packing fraction The algebraic difference between the relative atomic mass of an isotope and its mass number, divided by the mass number
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。