7227| 8
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請教:這是不是螺紋缺陷 |
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點評
淬火裂紋不會這么規則的,圖片也沒啥問題,看看滾齒是不是有磨損什么
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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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