Project Head Start
胎头拨露
head visible on vulval gapping
宫缩时胎头露于阴道口，宫缩间歇时又缩回阴道内。
相关词条
assistant head nurse
top of the head
deputy district head【管理】
laying head
groove transducing head driving
fishplate with integral tread parts lying in the cross-section of the rail head
vehicle head-lighting device with provision for periodically chopping the beam