短語(yǔ)詞組短語(yǔ)nucleon n number 核子數(shù);質(zhì)量數(shù)effective valence nucleon pair number 有效價(jià)核子對(duì)數(shù)averge nucleon number density 平均核子數(shù)密度valence nucleon number 價(jià)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