By means of this design, to improve energy efficiency, is also desirable sports equipment or instrument mechanical work produced in the human power drive, converted into electric energy
Designed to improve energy efficiency, it is also hoped that the mechanical work generated by sports equipment or equipment when driven by human sand will be converted into electrical energy.
The mechanism is designed to improve energy efficiency, and it is also hoped that the mechanical work generated by sports equipment or equipment when driven by manpower will be converted into electrical energy<br>