crystal l microphone晶体话筒
quartz-crystal subaqueous microphone石英晶体水下传声器
piezoelectric crystal microphone压电晶体传声器
crystal microphone detail晶体麦克风
4-channel crystal-controlled wireless microphone receiver频道晶体控制无线话筒接收机
N(名词) a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy 压电式麦克风