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請教:45#鋼管去應(yīng)力退火后對抗拉強(qiáng)度、硬度、金屬組織有影響嗎? |
Archiver|手機(jī)版|小黑屋|機(jī)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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