蜗轮齿顶圆柱面 worm and wheel: 蜗杆与蜗轮worm wheel: worm wheel = worm-gear. worm and worm wheel: 蜗杆和蜗轮; 蜗轮蜗杆对worm-and-(worm-)wheel: 蜗杆与蜗轮副cylinder wheel: 管形砂轮; 筒形砂轮下载手机词典可随时随地查词查翻译