4499| 2
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噪音頻率是2倍的齒輪嚙合頻率,一般是什么問題? |
點評
修形是不是研磨的意思啊
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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