air control valve group
auxiliary air control valve
four valve control valve group
IACV Idle Air control Valve
retarder air control valve
retarder control valve control
secondary air control valve
stick control valve control section
swing control valve control
5-axis numerical control machining
840D numerical control system
automatic numerical control
automatic numerical control lathe-broaching machin
automatic programming system of numerical control
Brief Analysis on Numerical Control Machining