·Parameters to be noted when handling network switches · How to solve the burrs in aluminum alloy die casting? ·Analysis of external fault maintenance of CNC lathes processing CNC lathe system? ·Safety operating procedures for CNC processing ·Quotation process of hardware die-casting ·Advantages of Metal Die Casting Infiltration Process ·CNC Selection of tools ·The principle of CNC precision machining technology. ·The shape structure of the refined carving machine ·Method for checking the accuracy of the operation of the CNC drilling and milling machine with a mov