Permanent AC servo motor control system of lockstitch sewing machine is introduced.介绍了一种用于电脑全自动工业平缝机的永磁交流伺服电机及其控制系统.This lockstitch cylinder arm machine is mainly used in the production of men's outerwear.这种锁缝筒形横臂机被...

backstitches的音标：...