1216| 5
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請教如何增大鍍硬鉻層表面粗糙度? |
點評
贊同春哥的說法。。。。。。鍍硬鉻成本比裝飾鉻高
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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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