derailleur
剑桥词典
- a type of bicycle gear that works by moving the bicycle chain from one sprocket wheel (= a wheel with a row of tooth-like parts ) to another
(自行車的)換擋裝置,變速器
Set the rear derailleur in the lowest gear , with the chain on the biggest sprocket wheel at the back. 把後輪的變速器調到最低擋,就是讓鏈條在後麪連到最大的鏈齒上。
derailleur gears 換擋齒輪 返回 derailleur