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.
要介绍了自行车上使用的花鼓式发电机的演变过程，分析了所用磁石，即铁氧体或钕铁硼的性能
劣，并进行了市场前景展望。
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.
要介绍了自行车上使用的花鼓式发电机的演变过程，分析了所用磁石，即铁氧体或钕铁硼的性能劣，并进行了市场前景展望。
声明：以上例
、词性分类均由互联网资源自动生成，部分未经过人工审
，
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