If you have problems balancing the weight of your foot to the pedal, it helps to keep a halved tennis ball right under the accelerator pedal lever.
如果你难以平衡脚上的重量，在油门踏板下放半个网球将对你有所帮助。
In some cars the driver has to step on a pedal to release the clutch, then shift the gears with a lever.
一些汽车的驾驶员用脚踩踏板来松开离合器，然后再用变速杆来换档。
Valves may be operated manually, either by a handle, lever or pedal.
阀门可手动操作，或者通过一个手柄，手柄或踏板。
The brakes may also be operated by mechanical linkages from the foot pedal and handbrake lever.
制动器也可由与制动踏板和手制动器杆相连的机械联动装置…
A novel lever-planet acceleration apparatus drives the bicycle so as to effectively utilize the pedal force of a rider and the rider can always obtain larger driving force with smaller force.
新颖的杠杆—行星加速装置传动可有效地利用骑手的蹬力，骑手用较小的力可始终如一地获得较大的驱动力。
Gas pedal lever; Fracture; Optimization;
油门踏板杆；断裂；优化；
Gas pedal lever; Fracture; Optimization;
油门踏板杆；断裂；优化；
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