Broadcast: May 7, 2003 By Paul Thompson VOICE ONE: This is Steve Ember. VOICE TWO: And this is Phoebe Zimmermann with the VOA Special English program EXPLORATIONS. We have news about two exploration d

发表于:2018-12-07 / 阅读(37) / 评论(0) 分类 VOA2003(上)-科技导航

By David McAlary Washington 21 November 2006 The U.S. space agency NASA says its oldest satellite orbiting Mars has probably ended its career. NASA engineers lost contact with it about three weeks ago and are losing hope of ever hearing from it agai

发表于:2019-01-12 / 阅读(86) / 评论(0) 分类 2006年VOA标准英语(十一月)

China launched a new high-resolution Synthetic Aperture Radar (SAR) imaging satellite from the Taiyuan Satellite Launch Center last Wednesday. 上周三,在太原卫星发射中心,我国发射了一颗新型高分辨率合成孔径雷达成像卫星

发表于:2019-02-05 / 阅读(84) / 评论(0) 分类 英语新闻

Three new-generation BeiDou navigation satellites were launched last year, and 98 percent of the components were Chinese made. BeiDou Navigation Satellite System has been in operation since 2000, making China the third country with an autonomous nav-

发表于:2019-02-18 / 阅读(53) / 评论(0) 分类 英语新闻

JOHANNESBURG, March 8 (Xinhua) -- In order to combat piracy and to improve maritime safety, South African authorities(当局官方) have begun using a sophisticated(复杂的精细的 ) navigation satellite system, it was announced on Tuesday

发表于:2019-02-19 / 阅读(112) / 评论(0) 分类 英语新闻

MABES(Magnet Bearing Flywheel Exper. System) 磁方位飞轮试验系统日本军事通信技术试验卫星 MACSAT(Multiple Access Communication Satellite) 多通道通信卫星美国轻型通信卫星

发表于:2019-03-13 / 阅读(326) / 评论(0) 分类 英文语法词汇