mass in the upper abdomen 伏梁mass in the lower abdomen [醫(yī)藥科學]小腹中痞塊mass in the liver [醫(yī)藥科學]肝積mass in the abdomen 痞積mass in general relativity mass in earth orbit [航空、航天科學技術(shù)]地球軌道質(zhì)量mass hysteria 集體歇斯底里；集體發(fā)瘋mass holography 質(zhì)量全息術(shù)mass grave 亂葬岡；集體埋葬的墓地mass fraction n. 質(zhì)量分數(shù)mass flux controller [計算機科學技術(shù)]質(zhì)量流量控制器mass flux 質(zhì)量流量mass flowrate 質(zhì)量流率mass flowmeter [流] 質(zhì)量流量計mass flow ratio [土木建筑工程]質(zhì)量流量比[機械工程]質(zhì)量量比mass flow 質(zhì)量流；質(zhì)量流量mass extinction [生態(tài)] 大量消亡mass evacuation [交通運輸工程]人群疏散mass energy transfer coefficient [機械工程]質(zhì)量能量傳遞系數(shù)質(zhì)能轉(zhuǎn)移系數(shù)[動力與電氣工程]質(zhì)能轉(zhuǎn)移系數(shù)質(zhì)量傳能系數(shù)mass energy equivalence principle [物理學]質(zhì)能相當性原理