单词：rotor electrostatic separator
筒型电选机
单词：rotor electrostatic separator 相关文章
Scientists: Spiders Use Electric Fields to Move through Air Scientists have long wondered how spiders can use the webbing they make to fly. The 19th century English naturalist Charles Darwin commented on their behavior when very small spiders landed
发表于:2018-12-16 / 阅读(109) / 评论(0)
2018年VOA慢速英语(七)月
2018年VOA慢速英语(七)月
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(167) / 评论(0)
2007年VOA标准英语（五月）
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(165) / 评论(0)
美联社新闻一分钟2007
美联社新闻一分钟2007