中国计划2019年中海上火箭发射-凯发k8官网

中国计划2019年中海上火箭发射
文章来源:未知 文章作者:enread 发布时间:2019-01-30 08:53 字体: [ ] 
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china's first seaborne rocket launch is scheduled for mid-2019 with a long march-11 carrier rocket set to blast off in the yellow sea.
 
中国首次海上火箭发射计划于2019年中期进行,届时一枚长征11号运载火箭将在黄海上点火升空。
 
china has achieved a breakthrough in the key technologies for seaborne launches, jin, of the china academy of launch vehicle technology, told a press conference by the china 1 science and technology corporation on tuesday.
 
the long march-11, with a length of 20.8 meters and a takeoff weight of about 57.6 tonnes, is the only rocket using solid propellants among china's new generation carrier rockets. it has a 2 simple structure and can be launched in a short time.
 
after leaving port, the rocket could be launched within a week, said jin.
 
the rocket can carry a payload of up to 350 kg to a sun-synchronous orbit at an altitude of 700 km and 700 kg to a low-earth orbit at 200 km. it is mainly used to carry small satellites, and can take multiple satellites into orbit at the same time.
 
a seaborne launch has many advantages over a land launch, jin said. for instance, the launch site is flexible, and falling rocket 3 pose less danger.
 
using 4 ships to launch rockets at sea would lower launch costs and give it a commercial edge, said jin.
 
it will also help lay the groundwork for developing reusable rockets and recovery technologies at sea.


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1 ck2yf     
adj.航空的,宇宙航行的
参考例句:
  • the world's entire aerospace industry is feeling the chill winds of recession.全世界的航空航天工业都感受到了经济衰退的寒意。
  • edward murphy was an aerospace engineer for the us army.爱德华·墨菲是一名美军的航宇工程师。
2 bkqzs3     
adv.比较...地,相对地
参考例句:
  • the rabbit is a relatively recent introduction in australia.兔子是相对较新引入澳大利亚的物种。
  • the operation was relatively painless.手术相对来说不痛。
3 1kmzty     
n.剩余物,残留物;遗体,遗迹
参考例句:
  • he ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • the remains of the meal were fed to the dog.残羹剩饭喂狗了。
4 uqbzl     
adj.平民的,民用的,民众的
参考例句:
  • there is no reliable information about civilian casualties.关于平民的伤亡还没有确凿的信息。
  • he resigned his commission to take up a civilian job.他辞去军职而从事平民工作。
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