... combination long roundnosed pliers 长嘴钳 combination loudspeaker 复合扬声器 combination machine 连系机 ...
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研究结果表明，复合有源消声器的消声效果取决于次级扬声器位置的等效声阻抗以及无源式消声管道本身的阻抗分布特性。
The property of the hybrid active silencer relies on the equivalent impedance at the secondary sound source position and the impedance distribution characteristics of the one-chamber pipe itself.
本发明的纤维平面音盆，采用复合型材料做成，解决锥体与凹面音盆占得过且很大扬声器空间的问题。
The fiber surface sound cone of the invention is prepared from a composite material and solves the problem that the cone and concave sound cone occupy too much space of the loudspeaker.
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