无级变速装置 stepless speed changes devices ; PIV drive ; steple eedchangesdevices ; positive infinitely variable
行星轮变速装置 planetary speed changing devices ; planetary eedchangingdevices
自动变速装置 [机] Automatic transmission
手动变速装置 manual gear shifting
电磁真空变速装置 vacuum gear shift ; electro vacuum gear shift
皮带变速装置 belt speeder
伞齿轮变速装置 bevel wheel change gear
变速齿轮变速装置 speed gear ; speed change gear
机械传动系统中广泛使用齿轮变速装置。
Speed change gears is widely used in mechanical transmission system.
变速装置的传动效率将影响汽车的经济性和动力性。
Efficiency of a transmission can effect the economy and performance characteristics of a vehicle.
单速自行车是指没有变速装置的自行车，只适合短途的休闲旅游。
Single-speed cycles-that is bikes with no gears, are really only suited to short, casual rides.
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