9463| 15
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鑄件內(nèi)生銹怎樣去除?有的鑄件內(nèi)部已經(jīng)加工 |
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點(diǎn)評(píng)
恩,手還會(huì)打起泡,但辦法還是可以的
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點(diǎn)評(píng)
贊成,不過酸洗后要及時(shí)做防銹處理
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