wormer驱虫剂wormn.虫；蠕虫v.蠕动；驱虫；慢慢获取worm-and-wheel axle蜗杆蜗轮式驱动桥worm shaft and nut type蜗杆轴螺母式worm-gear drive ratio蜗轮传动比worm and lever steering蜗杆曲柄式转向器worm-and-wheel gear蜗轮螺杆机构worm gear-worm system蜗轮-蜗杆系统Worm in blood of cattle牛的血液里充满了一种寄生虫worm-wheel hob thread蜗轮滚刀螺纹worm-driven rear axle蜗杆传动后轴worm-type distributor螺旋式排肥器