“class A push-pull sound track”的概念、定义、翻译、参考文献-科学参考

单词	class A push-pull sound track
释义	class A push-pull sound track [´klas `ā ¦pu̇sh ¦pu̇l `sau̇n ´trak] ^{ENGINEERING ACOUSTICS} Two single photographic sound tracks side by side, the transmission of one being 180° out of phase with the transmission of the other; both positive and negative halves of the sound wave are linearly recorded on each of the two tracks.
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