dynamos
1.He has a bicycle with lights powered by a dynamo.
他自行车上的灯由发电机提供源。
2.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.
摘了自行车上使用的花鼓式发电机的演变程,分析了所用磁石,即铁氧体或钕铁硼的劣,并进行了市场前景展望。
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