doubler

... double-pulse modulation 双脉冲调制 doubler 倍增器；折叠机；倍加器；并线机 double-row conic roller bearing 双列锥形滚柱轴承 ...

 yarn doubling winder

... yarn diameter 纱直径 yarn doubling winder 并线机 yarn dyed fabric 色织物 ...

 assembler

... 编线机 braiding machine 并线机 assembler; doubling frame; twisting frame; yarn doubling winder 拆线机 destringer; unwinder ...