波前位相梯度
RMS of the wavefront gradients
侧前位胎盘
Placenta praevia partialis
Placenta praevia lateralis
超低位前切除
ultra-low anterior resection
ultralow anterior resection
超低位前切除术
utralow anterior dissection
垂直前位喉次全切除术
Platysml myocutaneous flap
低位前切除
Low-anterior resection
Lower anterior resection
Bureau of the Legislative Affairs under the State Council
点火提前位置传感器盖
timing advance position sensor cover
电刷超前位移
forward lead of the brushes
后前位X线头影测量
posteroanteriorcephalometricanalysis