hub GRE专八

Chicago is a hub of airline traffic.

芝加哥是航运中心。

In the war the magazine was antifascist from hub to tire.

在战争期间，这杂志始终是反法西斯的。

Arequipa, the city at the foot of El Misti, is the commercial and agricultural hub of southern Peru.

阿雷基帕城在米斯提火山山脚下，是秘鲁的商业和农业中心。

At the present hour, the radiation of diseases from Paris extends to fifty leagues around the Louvre, taken as the hub of this pestilential wheel.

目前，巴黎疾病已扩散到以卢浮宫为中心的方圆五法里地区。

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，即氧体硼的性能优劣，并进行了市场前景展望。