在较长的非工作期间，由小功率发动机缓慢地增加飞轮的速度。

During the longer, nonactive period, the speed of the flywheel is built up slowly by a comparatively low-powered motor.

youdao

在较长的非工作期间，由小功率发动机缓慢地增加飞轮的速度。

During the longer, nonactive period, the speed of the flywheel is built up slowly by a comparatively low-powered motor.

youdao