平行折线卷筒
parallel broken line pulley
绞盘卷筒曳拉器制动电磁线圈组件
winch drum drag brake solenoid group
双卷筒收线机
take-up machine with double capstans
新型折线槽卷筒
new polygonal-line groove drum
并列回转式开卷-卷取机
double-swiveling uncoiler and recoiler
超声波卷筒纸断裂指示器
ultrasonic web-break detector
冲淬卷线
line of punching-quenching and rolling