由于胎位不正和先露异常引起的梗阻性分娩
Obstructed labour due malpos and malpresentation
侧前位胎盘
Placenta praevia partialis
Placenta praevia lateralis
超声波定位胎盘
ultrasonic localization of placenta
超细轮胎胎面胶粉
ultra -fine tyre rubber powder
工程胎胎面缠绕机
engineering tire tread winding up machine
轮胎胎压监测系统
tire pressure monitoring system
母胎不相容性
materno fetal incompatibility