2387| 3
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合金開裂 |
點評
應該是這樣的,要么冷裂,要么就是焊接車刀的工藝。
評分 | ||
Archiver|手機版|小黑屋|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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