5581| 4
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高速鋼怎么焊接才不退火? |
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點評
話說我常焊淬火鋼來著,沒有退火的情況。
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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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