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GCr15其中的“G”讀“滾”,建議機械行業從業人員多翻翻機械設計手冊 |
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點評
錯了就是錯了
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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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