CNC machining center is mainly composed of four parts: NUMERICAL control device, servo system, machine tool body, knife library. It combines the functions of CNC milling machine, CNC boring machine and CNC drilling machi···

Hardware: five metals. In ancient times, it refers to five metals such as gold, silver, copper, iron and tin, which were artificially processed into metal objects such as knives, swords and works of art. "Wu Yue spr···