compound flat screw die复合搓丝板
compound feed-screw复式刀架丝杠
compound screw mechanism[机] 复式螺旋机构
compound screw pump混合齿形螺杆泵
compound feed-screw graduated collar复刀架丝杠刻度圈
screw compound复动螺旋
screw compound interchange螺旋型组合式立交
screw retaining compound螺丝防松装置