4877| 12
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焊縫車加工下好還是不車好呢。 |
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點評
同意,不開坡口強度達不到。
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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,浙公網安備33038202004372號 )
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