micropunch plate muffler
... micromanometer微压计 micropunch plate muffler微穿孔板消声器 mid-frequency noise中频噪声 ...
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最终将微穿孔板消声器安装到新舟60飞机APU的排气管道上在飞机场进行现场测试，得到了满意的降噪结果。
At last, the test for the MA60 APU noise with the micro perforated absorber is present in this paper.
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