2442| 3
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219的管焊接在299的管上(不是垂直焊接,帶角度),219管的斜切展開圖怎么畫 |
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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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