国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

 
  .contact us |.about us

Highlights ... ...
Search:
    Advertisement
Long-March Rocket Technology Meets International Standards
( 2003-05-31 13:57) (china.org.cn)

With the successful launch of the Beidou navigation and positioning satellite, the Long-March launchers have raised the success rate of this Chinese technology to 90 percent. Chinese aeronautical experts said the overall technology embodied in China's Long-March carrier rockets has already met international standards.

The successful launch of the Beidou navigation and positioning satellite has raised the success rate of the Long-March launchers to 90 percent from 89.8 percent. According to relevant statistics, the success rate of America’s Delta carrier rockets is 94 percent, the success rate of the European Ariane carrier rockets is 93 percent, and the Russian Proton carrier rockets, 90 percent.

Since the Long-March launcher put China’s first man-made satellite, Dongfanghong (Red East) 1, into orbit, the carrier rockets have successfully sent 52 different Chinese-made satellites, 27 foreign satellites and four Shenzhou space shuttles into space. Over the past 14 years, China’s astronautic technology has developed rapidly and continuously. The Long-March carrier rockets alone have made 50 launches. The 28 continuously successful launches of the Long-March carrier rockets since October 1996 show China’s astronautic technology capability.

From propulsion in normal to low temperature, from series connection rocket to carrier rocket, from launching satellite load to launching manned spaceship, Long-March launchers have passed many different technology experiences.

Now the Long-March family has 12 different kinds of rockets, and they are capable of launching spacecraft in different orbits.

According to experts, in order to raise the rockets’ competitive edge in the world launch market, scientists are actively researching and developing a new carrier rocket that is non-polluting, low cost, reliable, adaptable and secure.

   
Close  
  Go to Another Section  
     
 
 
     
  Article Tools  
     
  E-Mail This Article
Print Friendly Format
 
     
   
        .contact us |.about us
  Copyright By chinadaily.com.cn. All rights reserved  
通化市| 丘北县| 新乐市| 乡宁县| 潞城市| 曲沃县| 阿克| 大名县| 山阴县| 孟村| 于田县| 谢通门县| 阿图什市| 兴海县| 修文县| 莱西市| 淮南市| 文安县| 岑巩县| 驻马店市| 浦江县| 延庆县| 中宁县| 三亚市| 哈尔滨市| 娱乐| 茶陵县| 陈巴尔虎旗| 孝义市| 红河县| 平潭县| 宜君县| 大丰市| 海南省| 香河县| 栖霞市| 榆林市| 双城市| 汕头市| 叶城县| 宣城市|