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表面處理求助 |
點(diǎn)評(píng)
謝謝,主要買錯(cuò)材料,下次用45號(hào)鋼做
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點(diǎn)評(píng)
要去掉原來的那層,之前因?yàn)檫@個(gè)事情專門問過,要去掉重新鍍的
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