- ratio wheel
- 减速: moderate; reduce the speed; ...
- 中间减速轮: intermediate reduction wheel
- 可逆转减速轮: reversible reduction gear
- 变速轮: change pulley; change speed gear; change spur gear; change wheels; change-wheel; ratio gear; stud gear; variable speed wheel gear; variable-speed wheel gear
- 测速轮: tachometer wheel
下载手机词典可随时随地查词查翻译