▎ 摘　　要

NOVELTY - One bandwidth calculator is a kind of graphene film compression extension air expansion shaft, by fixing seat (1), a motor (2), transmission shaft (3), shaft (4), handle (5), a bearing seat (6), a gas pump (7), counter module (8) is composed of the motor (2) is fixed on fixing base (1) and upper left side seat, transmission shaft (3) left end and motor (2) output end connected with together, the right end and shaft (4) left end connected with each other and whole of through shaft (4) and bearing seat (6) is fixedly connected with the counter module (8) installed fixedly on fixed seat (1) and the upper transmission shaft (3) one side end is left, this utility new type, because of transmission shaft right end use cross universal joint connecting way and electromotor connected together need change the whole multi-induction bolt when the only change needed is crossed universal joint, one to multi-machine with the target.