表面粗糙度比较样块 外磨 外磨4块 南京毫特科技有限公司

p1Src=//y1.yzimgs.com/uploads/400614/2019828-194917478.jpg?watermark/2/text/5Y2X5Lqs5bGx54m55Luq5Zmo5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/Center&p2Src=//y2.yzimgs.com/uploads/400614/2019828-194933256.jpg?watermark/2/text/5Y2X5Lqs5bGx54m55Luq5Zmo5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/700/fill/I0E3QTlBOA==/gravity/Center&p3Src=//y2.yzimgs.com/uploads/400614/2019828-19494531.jpg?watermark/2/text/5Y2X5Lqs5bGx54m55Luq5Zmo5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/500/fill/I0E3QTlBOA==/gravity/Center