2624| 1
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求助:直徑1.6的65mn鋼絲,20秒內加熱到1100度,金相變化? |
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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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