短語詞組短語mass transportation centre 集體運(yùn)輸中心mass centre motion 質(zhì)心運(yùn)動(dòng)mass spectrometry data centre 質(zhì)譜分析數(shù)據(jù)中心mass centre coordinate 質(zhì)心坐標(biāo)系mass centre translation diffusion 質(zhì)心擴(kuò)散mass spectra spectrometry data centre 質(zhì)譜分析數(shù)據(jù)中心barycenter centre of mass 質(zhì)量中心centre of mass energy 質(zhì)心能量 返回 mass centre