描述
闭环控制系统闭环控制系统(closed-loop control system)的特点是系统被控对象的输出(被控制量)会反送回来影响控制器的输出，形成一个或多个闭环
Giddings & Lewis Radial Arm Drill Press
Giddings &Lewis 36″ FACING HEAD, w/ Tool Holder
36″ Dia. GIDDINGS & LEWIS Cont-feed Facing Head
36″ W 36″ L Giddings &Lewis 36″ X 36″ AIR LIFT ROTARY T
4′ Arm 9″ Col Dia Giddings &Lewis CHIPMASTER RADIAL DRI
90° GIDDINGS & LEWIS Right Angle Milling Head
For #FUAR Horizontal Boring Mill, #50 Taper, #7 Morse
