胎盘胎膜残留
Retained placental fragment
retained placenta
[宇宙线的]重初级核
heavy primaries [of cosmic ray
变矩器初级部件
converter primary component
变矩器初级调节器弹簧
converter primary regulator spring
变矩器初级调节器阀
converter primary regulator valve
不分年级初等计画
ungraded elevmentary programs
草地初级生产能力
Grassland primary productivity
草原初级生产力
Grassland primary productivity
长初级双边直线感应电动机
Long Primary Double-sided Linear Induction Motor
长初级直线感应电动机
Double-sided Linear Induction Motor
出局初级接线器架
outgoing primary switch frame