XICHANG, July 29 -- China on Sunday sent twin satellites into space via a single carrier rocket, entering a period with uNPRecedentedly intensive launches of BeiDou satellites.
The Long March-3B carrier rocket lifted off from Xichang Satellite Launch Center in southwest China's Sichuan Province at 9:48 a.m., the 281st mission of the Long March rocket series.
The twin satellites are the 33rd and 34th of the BeiDou navigation system. They entered orbit more than three hours after the launch. After a series of tests, they will work together with eight BeiDou-3 satellites already in orbit, said the launch service provider.
A basic system with 18 BeiDou-3 satellites orbiting will be in place by the year end, which will serve countries participating in the China-proposed Belt and Road Initiative.
Named after the Chinese term for the Big Dipper, the BeiDou system started serving China in 2000 and the Asia-Pacific region in 2017. It will be the 4th global satellite navigation system after the U.S. GPS system, Russia's GLONASS and the European Union's Galileo.
The satellites and the rocket for Sunday's launch were developed by the China Academy of Space Technology and China Academy of Launch Vehicle Technology, respectively.
雅思词汇:饮食--蜜饯、酒
雅思分类词汇:体育-足球
雅思词汇:报纸用语
雅思分类词汇:篮球词汇
雅思听力场景和词汇:日程活动介绍场景
雅思分类词汇:动物篇
雅思分类词汇:报刊图书词汇
雅思词汇:乘机词汇
词汇语法学习与英语水平的提高
雅思词汇:交通和交通工具(上)
雅思分类词汇:卡片
雅思词汇:蔬菜篇
雅思口语词汇:烹饪词汇
国人为何因‘单词’而折腰
雅思词汇:旅行签证
雅思词汇:国外节日词汇
雅思口语词汇:花卉词汇
雅思常考十种场景词汇(2)
雅思词汇:个人简历-品质
ielts口语词汇:电影类别
雅思词汇:公司企业部门名称
雅思听力场景和词汇:工作场景
雅思分类词汇:交通相关词汇
雅思词汇:艺术词汇
雅思词汇:标点符号
雅思词汇:体育-赛马、球类等
雅思词汇:公共标志
雅思词汇:法庭与法律用语
雅思词汇:职位、职务
雅思词汇:中国人民团体名称
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |