chain n axle 链轴
Chain axle expensive and very difficult to install.
车轴链条价格昂贵，且安装非常困难。
The wood was disappearing under mud, and the iron beneath rust. Under the axle-tree hung, like drapery, a huge chain, worthy of some Goliath of a convict.
木质隐在泥浆里，铁质隐在铁锈里，车轴下面，横挂着一条适合苦役犯歌利亚①的粗链。
The bike chain drives a sun gear on the rear axle, which transmits power to planetary gears situated around it.
自行车的链条会驱动后轮轮轴上的太阳齿轮，将动力传送到四周的行星齿轮。
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