“directional louds peaker”的概念、定义、翻译、参考文献-科学参考

单词	directional louds peaker
释义	directional louds peaker 指向扬声器
随便看	knee restraint kneeroom knee sensitivity knee shield knee sprung kneestone knee strap knee support knee tendon reflex knee timber knee tool knee twin knee type knee-type structure knee voltage knee wall Kneriidae knickpoint knick point knick zone knife knife and fork (西餐用) knife back knife bar knife blade

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