对现场测量管道声衬声阻抗的双传声器法进行了研究。
The two-microphone method is investigated for the objective of in situ measuring the impedance of an acoustic liner in a duct.
对实验的结果进行了一些分析，给出了厚板通气声衬声抗的一种算法。
The algorithm of the reactance is modified for the liner with thick perforated plate, based on the analysis of experimental results.
本文还研究了带空腔的吸声覆盖层在各种背衬和不同腔型下的声反射特性，分析了结构对其的影响。
The acoustic reflection characteristics of the underwater anechoic coating with cavity are researched in different backings and cavity types, and effects of structure are also analyzed.
本文还研究了带空腔的吸声覆盖层在各种背衬和不同腔型下的声反射特性，分析了结构对其的影响。
The acoustic reflection characteristics of the underwater anechoic coating with cavity are researched in different backings and cavity types, and effects of structure are also analyzed.
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