abrading internal frame by abrasive paper
...底油(applying primer coat to top surface) trimming)你看工艺 英语内窗四边磨砂纸(abrading internal frame by abrasive paper) 工艺品批发市场锉内窗四边(filing internal frame) 你看internal刮顶针批锋(removing burrs round pads of ejector pin) 产品工...
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