2980| 6
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深孔加工,怎樣能把62毫米的孔加工成115的通孔? |
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點評
好像是這樣
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小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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