worm and wormwheel meaning in English

蜗杆蜗轮
喁杆

Accuracy of fine - pitch cylindrical worm and wormwheel
小模数圆柱蜗杆蜗轮精度
Terminology and symbols for cylindrical worm and wormwheel
圆柱蜗杆蜗轮术语及代号
Accuracy of cylindrical worm and wormwheel
圆柱蜗杆蜗轮精度
Cylindrical worm and wormwheel information of the dimensional data to be given on the drawing
圆柱蜗杆蜗轮图样上应注明的尺寸数据