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A device making it possible to change the length of pedaling on a brief with the same pedal crank
A device making it possible to change the length of pedaling on a brief with the same pedal crank
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机译:一种设备,可以通过相同的踏板曲柄改变脚蹬上的踏板长度
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摘要
The bicycle crank (3,5) arm has two holes (1,2) for fixing the pedal. The projection of the axis of the bicycle crank, or the central pivot (4) passes through the middle of the area of metal between the two holes.
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