The eXpression of directivity of far field and near field was derived.
推导出了此类换能器的远场指向性和近场声压的表达式。
Has a microphone with a single directivity and a wide frequency range.
频率范围宽的单指向性话筒，高质量的拾音效能。
Why is it necessary to explain the directivity of thoughts and provide clues?
为什么让别人感受到，为什么会有自我的思维指向和线索？
The directivity of the group of the point source and the line source is analyzed.
分析了点声源组和线声源的指向性。
The directivity of the group of the point source and the line source is analyzed.
分析了点声源组和线声源的指向性。
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