上行车

I had to strap the bag to my bicycle.

我得用带子把包捆到自行车上。

He has a bicycle with lights powered by a dynamo.

他自行车上的灯由发电机提供能源。

He was covered with bruises after falling off his bicycle.

他从自行车上摔下来, 摔得浑身。

This motorcyclist who is motorial is cycling in the motordrome.

个有运动神经的摩托车手赛车道路上骑自行车。

Evolving process of hub dynamo which used in bicycle is presented. The performance of magnetite viz. ferrimagnetism or NdFeB is analyzed. The prospect of marketing is viewed.

摘要自行车上使用的花鼓式发电机的演变过程，分析所用磁石，即铁氧体或钕铁硼的性能优劣，并进行市场前景展望。