3270| 2
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q345R低合金鋼埋弧焊零下20度(-20°)沖擊吸收功,焊縫區(qū)、熱影響區(qū)哪個大些? |
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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(wǎng)安備33038202004372號 )
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