“pneumatic loudspeaker”的概念、定义、翻译、参考文献-科学参考

单词	pneumatic loudspeaker
释义	pneumatic loudspeaker [nu̇`mad·ik `lau̇d´spēk·ǝr] ^{ENGINEERING ACOUSTICS} A loudspeaker in which the acoustic ouput results from controlled variation of an airstream.
随便看	dark conduction dark current dark-current pulse dark discharge dark-eclipsing variables dark-field illumination dark lightning dark-line spectrum dark matter dark nebula dark of the moon dark plaster dark-red silver ore dark resistance darkroom darkroom filter dark-ruby silver dark satellite dark segment dark space dark spot dark star dark-trace tube Darling shower Darlington amplifier

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