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在鋼件表面包一層耐磨的塑料類(lèi)的材料----請(qǐng)教 |
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點(diǎn)評(píng)
噴塑不知道你試過(guò)沒(méi)有?有空還要請(qǐng)教你自動(dòng)打螺絲的結(jié)構(gòu)設(shè)計(jì),不用謝!
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