短語詞組短語ground rock mass 地麪巖躰ground -state mass of nuclide 原子核基態(tài)質(zhì)量ground state baryon mass 基態(tài)重子質(zhì)量additional pollutant ground mass concentration 汙染物地麪附加質(zhì)量濃度ground stress of rock mass 巖躰地應(yīng)力mass ground control 集中引導(dǎo)plant mass above ground 草地地上部産草量 返回 ground mass