片语
passive detection device无源探测装置
Passive e device无源器件
passive damping device被动减振装置
passive display device[电]
passive power device无源滤波装置
passive infrared device被动式红外装置
Passive Optical Device无源光器件
passive navigation device无源导航设备
passive indication device无源指示装置
passive components被动元件;无源元件