〔
〕;He has a bicycle with lights powered by a dynamo.
他自行车上
灯由发电机提供能源。
He has a bicycle with lights powered by a dynamo.
他自行车上灯由发电机提供能源。
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.
摘要介绍
自行车上使用花鼓式发电机演变过程，
所用磁石，即铁氧体或钕铁硼性能优劣，并进行市场前景展望。
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类均由互联网资源自动生成，部未经过人工审核，其表达内容亦不代表本软件
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