短語詞組短語nucleon n number 核子數(shù);質(zhì)量數(shù)effective valence nucleon pair number 有效價核子對數(shù)averge nucleon number density 平均核子數(shù)密度valence nucleon number 價核子數(shù)number nucleon 質(zhì)量數(shù);核子數(shù)number of nucleon -nucleon collisions 核子 返回 nucleon number