久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

China launches Shijian 13 communications satellite

By Zhao Lei | chinadaily.com.cn | Updated: 2017-04-12 21:40

China launched its most advanced communications satellite at 7:04

Shijian 13, developed by the China Academy of Space Technology and based on its DFH-3B communications satellite platform, was launched atop a Long March 3B carrier rocket from Xichang Satellite Launch Center in Sichuan province.

The satellite, which weighs 4.6 metric tons, is expected to stay in a geostationary orbit at about 36,000 kilometers above the Earth for 15 years, the academy said.

It features a Ka-band broadband communications system capable of transmitting 20 gigabytes of data per second, making it the most powerful communications satellite China has ever developed.

Zhao Jian, a space program official at the administration, said that the transmission capacity of Shijian 13 exceeds the total capacity of all the country's previous communications satellites.

Zhou Zhicheng, head of the China Academy of Space Technology's Telecommunication Satellite Institute, said Shijian 13 would use electric propulsion after it enters orbit, reducing the amount of chemical fuel it needs to carry.

At present, most satellites rely on chemical propulsion, which requires a relatively large amount of fuel that occupies space that could otherwise be used for scientific instruments.

Zhou said the new satellite is able to cover most parts of China's land territory and will help to enable passengers on jetliners and high-speed trains to use the internet.

 

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
 
主站蜘蛛池模板: 草草久| 91精品国产91久久久久久 | 免费国产一区二区三区 | 久久偷看各类wc女厕 | 国产日韩欧美一区二区 | 日韩美一区二区三区 | 高清不卡一区二区三区 | 99久99久6久热在线播放 | 欧美日韩在线观看精品 | 亚洲日韩中文字幕在线播放 | 日本高清视频在线观看 | 韩国一级黄色毛片 | 91在线成人 | 亚洲精品综合在线 | 成人99国产精品 | 国产男女乱淫真视频全程播放 | 国产微拍精品福利视频 | 精品91精品91精品国产片 | 欧美专区一区二区三区 | a级片免费在线播放 | 99久久精品视香蕉蕉er热资源 | 久草网在线 | 免费看毛片网 | 精品国产综合区久久久久久 | 久久久精品视频免费观看 | 综合欧美日韩一区二区三区 | 日本黄页网站免费大全 | 日韩国产成人精品视频人 | 欧美大片一级毛片 | 久久99精品久久久久久h | 日本成年人视频网站 | 欧美成人三级网站在线观看 | 九九干| 中国美女隐私无遮挡免费视频 | 久久综合中文字幕一区二区 | 久久精品国产精品亚洲20 | 中文字幕亚洲一区二区v@在线 | 中文字幕一二三区乱码老 | 欧美成人观看免费完全 | 一级毛片aaa片免费观看 | 国产精品国产三级国产专区5o |