permanent bar永外磁棒
permanentadj.永久的;持久的n.<口> 烫发
Permanent magnet synchroncus motor永磁同步电动机
permanent ventricular fibrillation持续性心室颤动
permanent signal detection circuit不挂机信号检测电路
Permanent-magnet ac servo system永磁交流伺服系统
permanent magent synchronous motor永磁同步电机
permanent respiratory tract injury永久性气管伤害[吸入硫化物等]
Permanent Tides and Geodetic Datum永久性潮汐与大地测量基准
permanent drum magnetic separation永磁筒式磁选机