8630| 13
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齒輪的熱處理對磨損時否有影響,? |
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點評
我認(rèn)為這個是比較中肯的
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小黑屋|手機版|Archiver|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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