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馬氏體不銹鋼最低熱膨脹系數(shù)是6.5,有沒有熱膨脹系數(shù)比它低的金屬材料 |
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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