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常用45#鋼表面處理有哪些 |
點(diǎn)評(píng)
像其他的鍍各種材質(zhì)以及氮化之類(lèi)的方法,,成本太高,,而且一般也很少用鍍層防銹的,像鍍鉻,,是增加表面硬度的,,用他來(lái)防銹,大材小用了吧�,。,。�
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