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spike microphone
释义
spike microphone
spike microphone
[
′spīk ‚mī·krə‚fōn
]
(engineering acoustics)
A device for clandestine aural surveillance in which the sensor is a spike driven into the wall of the target area and mechanically coupled to the diaphragm of a microphone on the other side of the wall.
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更新时间:2026/9/30 6:52:26