·Advantages and disadvantages of CNC parts processing ·The difference between high -speed drilling processing center and processing center ·The role of digital servo system ·Four factors affecting the cutting accuracy of CNC laser cutting machines ·CNC auxiliary function ·The machine tool installed at high -speed carving and milling machine is in place ·What is the five axis machining of CNC machining? ·Structural characteristics of horizontal processing center ·Damage causes of hardware die casting die ·What parts of the CNC system is composed of? What is its own role?