| 摘要 |
The power detecting or sensing device to be applied to room pedalling apparatus or bicycles essentially comprises in a common envelope a tachometer and a revolving drum, thereon a colored pattern is defined controlled by a dynamometric braking caliper associated with the flywheel of the bicycle, the pointer of the tachometer and the pattern on the drum cooperating to indicate on a case patterned dial on the top of the envelope, for each speed of the bicycle, a respective value of the power applied by the user to cause the flywheel to rotate.
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