?振膜式传声器
... diaphragm valve 隔膜阀 diaphragm vibrating microphone 振膜式传声器 diaphragm-actuated regulator 薄膜调治器 ...
振膜式传声器
The team was using what is called a dynamic microphone, which picks up sound using a heavy, vibrating diaphragm about 1-inch around.
FORBES: Racecar Drivers To Use Bell Labs Microphone
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