<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
          US EUROPE AFRICA ASIA 中文
          China / Innovation

          China launches two satellites for navigation system

          (Xinhua) Updated: 2012-09-19 10:51

          China launches two satellites for navigation system

          China launches the 14th and 15th satellites for the Beidou system into space from the Xichang Satellite Launch Center in Sichuan province at 3:10 am Beijing Time Wednesday. [Photo/CFP]

          XICHANG, Sichuan - China successfully launched another two satellites into space for its indigenous global navigation and positioning network at 3:10 a.m. Beijing time on Wednesday.

          They were the 14th and 15th satellites for the Beidou, or Compass, system. The satellites, launched from the Xichang Satellite Launch Center in southwest China's Sichuan Province, were boosted by a Long March-3B carrier rocket.

          Since it started to provide services on a trial basis on December 27, 2011, the Beidou system has been stable and its services have been increased and improved, said a spokesman for the China Satellite Navigation Office.

          The system has been used in transportation, weather forecasting, marine fisheries, forestry, telecommunications, hydrological monitoring and mapping, according to the spokesman.

          China started to build up its own satellite navigation system to break its dependence on the U.S. Global Positioning System in 2000.

          Between October 2000 and May 2003, the country set up a regional satellite navigation system after launching three Beidou geostationary satellites.

          Beidou-1 can not meet growing demand, so China decided to set up a more functional Beidou-2 regional and global navigation system, Qi Faren, former chief designer for Shenzhou spaceships, said in an interview in 2011.

          From April 2007 to April this year, China launched another 13 orbiters to form its Beidou-2 system, which will eventually consist of 35 satellites.

          Three Beidou satellites were sent into space early this year. The 11th satellite was boosted by a Long March-3C carrier rocket on February 25, while the 12th and 13th were sent by a Long March-3B carrier on April 30.

          The network will provide satellite navigation, time and short message services for Asia-Pacific regions within 2012 and global services by 2020.

           

           

          Highlights
          Hot Topics
          ...
          主站蜘蛛池模板: 亚洲日本韩在线观看| 久热这里只有精品蜜臀av| 伊人色综合久久天天小片| 97一区二区国产好的精华液| 国产视频精品一区 日本| 亚洲AV无码成人精品区| 四虎女优在线视频免费看| 久久精品国产99久久无毒不卡| 另类 专区 欧美 制服丝袜| 亚洲欧洲日产国无高清码图片| 欧美日韩理论| 国产成人毛片无码视频软件| 国产精品成人免费视频网站| 亚洲精品一区二区三区小| 国产日韩AV免费无码一区二区三区 | 天天摸夜夜添狠狠添高潮出免费| 亚洲精品宾馆在线精品酒店| 亚洲欧美国产另类首页| 精品一区二区三区四区激情| 99在线小视频| 狠狠久久五月综合色和啪| 亚洲国产成人久久77| 国产色婷婷亚洲99精品小说| 国产一级精品毛片基地| 午夜AAAAA级岛国福利在线| 中文乱码字幕在线中文乱码 | 亚洲禁精品一区二区三区| 伊人久久大香线蕉av网禁呦| 91亚洲国产成人久久精品 | 无码专区视频精品老司机| 久久综合伊人77777| 亚洲精品久久久中文字幕痴女| 婷婷亚洲国产成人精品性色 | 亚洲人成电影在线天堂色| 亚洲最大av免费观看| 2021亚洲国产精品无码| 91九色系列视频在线国产| 日本中文字幕有码在线视频| 人妻在线无码一区二区三区 | 成人午夜免费无码视频在线观看| 国产精品无码一区二区三区电影|