7935| 6
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A3鋼和45#鋼的最佳焊接方法是? |
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點評
我們用的J422和E4303焊條,焊件較大,保溫有難度。
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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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