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METHOD OF GAINING MECHANICAL ADVANTAGE FOR A BICYCLE FOOT PEDAL MECHANISM
METHOD OF GAINING MECHANICAL ADVANTAGE FOR A BICYCLE FOOT PEDAL MECHANISM
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机译:获得自行车脚踏板机构的机械性能的方法
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摘要
A crank arm for a bicycle chainset is provided. The arm comprises means for varying crank length during rotation, whereby to gain mechanical advantage.
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