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請(qǐng)各位師傅幫忙看一下是什么問題,,謝謝,! |
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點(diǎn)評(píng)
不管怎么洗,,總得要洗干凈。滲碳就是在金屬表面滲入碳元素,,如果有油污,,就會(huì)阻攔碳的滲入,油污就成為防滲劑,!
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