3929| 33
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40cr光度還可以吧,,兄弟們 |
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點評
另外,,圖紙上的每個尺寸都標(biāo)公差,,有必要嗎?
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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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