音器, 扬声器, 喇叭;
感器,变频器;The results show that the influences of various backings on the acoustic characteristics of anechoic coating are obviously different.
结果表明，不同背衬对吸声覆盖层吸声性能
影响具有明显不同特性。
, 无反响The results show that the influences of various backings on the acoustic characteristics of anechoic coating are obviously different.
结果表明，不同背衬对吸声覆盖层吸声性能影响具有明显不同特性。
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