单词	置换调制
释义	置换调制〖信〗permutation modulation
随便看	magnetic flux standard magnetic flux test magnetic-flux test magnetic flux trajectory method magnetic flux transducer magnetic flux tube magnetic flux type magnetic flux unit magnetic flux units magnetic flux welding magnetic flywheel magnetic focus magnetic focused image intensifier magnetic focused image intensifier tube magnetic focus gun magnetic-focus gun magnetic focusing magnetic, focusing magnetic focusing beam triode magnetic focusing coil magnetic focusing indicator tube magnetic foil magnetic foil device magnetic foil device, record player magnetic foil device, record player control