半圆形转子磁极

By Parke Brewer The women's pole vault provided one of the stirring dramas of the 2004 Olympic track and field competition. Until the mid 1990s, women's pole vault was not taken very seriously, mainly

发表于:2018-12-12 / 阅读(132) / 评论(0) 分类 VOA2004(下)--雅典奥运

By Jim Fry Washington 03 May 2007 Marine Osprey The U.S. Marines are preparing to send a new tilt rotor aircraft into combat for the first time. And the American manufacturer predicts a civilian version may soon appear over many of the world's citie

发表于:2019-01-07 / 阅读(202) / 评论(0) 分类 2007年VOA标准英语(五月)

1. The man accused of kidnapping two young boys has pleaded not guilty in one of the cases. Michael Devlin went before a judge this morning in the case of Ben Ownby. Meantime, the parents of Shawn Hornbeck, the other teen he's accused of kidnapping,

发表于:2019-01-08 / 阅读(190) / 评论(0) 分类 美联社新闻一分钟2007

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发表于:2019-02-09 / 阅读(241) / 评论(0) 分类 加州语文教材California Treasures G5

电机行业常用的中英文对照

发表于:2019-02-18 / 阅读(237) / 评论(0) 分类 英文语法词汇