因其具有此优点，近场声全息技术迅速地成为一种声源识别和声场可视化的强有力工具。

Because of such special features, the NAH technique becomes one of the most powerful tools to identify sound sources and visualize sound field.

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采用基于分布源边界点法的近场声全息技术对运转状态下的罗茨真空泵进行了噪声源识别和定位研究。

The distributed source boundary point method(DSBPM) based nearfield acoustic holography(NAH) is used for identifying and localizing noise sources of the roots vacuum pump.

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提出空间声场分离技术，突破了近场声全息(NAH)的应用局限。

Sound field separation technique has been proposed, which overcomes the limitation on applications of near_field acoustic holography (NAH).

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