perforated panel soundabsorbing material的意思|示意
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穿孔板吸音材料
perforated panel soundabsorbing material的网络常见释义
穿孔板吸声材料 多空吸声材料 porous absorbing material 穿孔板吸声材料 perforated panel soundabsorbing material ; absorbing material 吸声材料背探头 absorbent material backing transducer ..