1288| 7
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關(guān)于開放式塑料腔體放大噪音問題 |
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點(diǎn)評(píng)
堵耳朵是好辦法,古人有實(shí)踐,盜鈴。。。。。
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
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