心形方向性麦克风  cardioid microphone

无向麦克风  astatic microphone

球形全向性麦克风  eight ball

全向性麦克风  omnidirectional microphone

指向性麦克风  directional microphone

无方向性  non-directional; Nondirectional

无方向性大线  non-directional atenna

无方向性的  non-directional; omnidirectional

无方向性的天线  directionless antenna

无方向性硅钢片  non-oriented silicon steel

无方向性天线  non-directional antenna; isotropic antenna; omnidirectional antenna

无方向性线圈  astatic coil

无方向性信标  non-direction beacon

无方向性信号  omnidirectional signal

无方向性讯号  signal; omnidirectional

单向麦克风  unidirectional microphone

定向麦克风  directional microphone

全向麦克风  omnidirectional microphone

双向麦克风  bidirectional microphone