12792| 26
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怎么判斷是拋光件還是鍍鉻件? |
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點評
硬度45~50HRC,材料3Cr13
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點評
不銹鋼,,拋光件,已確定
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點評
經(jīng)驗不豐富,,所以才大動干戈,,為的是不走彎路。,。,。
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