3rd sino-Brazilian earth resources satellite launched |
文章来源： 文章作者： 发布时间：2007-09-21 02:23 字体： [ 大 中 小] 进入论坛 |
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| China launched the third earth resources satellite co-developed with Brazil on Wednesday morning and the two nations will jointly1 develop two more satellites. |
| Sept. 20 - China launched the third earth resources satellite co-developed with Brazil on Wednesday morning and the two nations will jointly develop two more satellites.
The satellite, named 02B, was launched on a Chinese Long March-4B carrier rocket which blasted off at 11:26 am (Beijing Time) from the Taiyuan Satellite Launch Center in northern China's Shanxi province.
The satellite separated from the rocket 12 minutes after lift-off, entering its preset sun-synchronous orbit, at a perigee2 of 738 kilometers and an apogee3 of 750 kilometers.
The 1,452-kilogram satellite with a designed lifespan of two years, will gather resources information and send images to China, Brazil and other countries, for use in agricultural production, environmental protection, city planning and land resources surveys.
This is the third earth resources satellite jointly developed by the China Academy of Space Technology (CAST) and the Brazilian National Space Research Institute (INPE). The previous two satellites were launched in 1999 and 2003 respectively.
They are remote sensing satellites that can collect information through high definition cameras.
The previous two Sino-Brazilian satellites, with 1,200 users in China and 3,000 users in Brazil, have produced more than 1 million images.
Zhang Qingjun, chief designer of the satellite told Xinhua, "China and Brazil will cooperate to develop two more earth resources satellite.
"At least one of the satellites will be launched in one to two years."
"If everything goes smoothly4, we can provide data to our users till 2015," he said.
China and Brazil have cooperated in earth resources satellite development since 1988. The CAST is responsible for the satellite system concept, the development of the thermal5 control subsystem, orbit control subsystem and onboard data management.
The INPE is responsible for the structural6 subsystem, power subsystem, and data collection subsystem.
"We hope to continue to learn from each other and strengthen our cooperation in aeronautics," he said.
Satellite 02B is the 38th satellite launched at the Taiyuan Satellite Launch Center, all of which have been successful, including the first earth resources satellite co-developed by China and Brazil. This launch also marks the 102nd launch of a Long March carrier rocket.
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点击  收听单词发音
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1
jointly
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| ad.联合地，共同地 |
参考例句： |
- Tenants are jointly and severally liable for payment of the rent. 租金由承租人共同且分别承担。
- She owns the house jointly with her husband. 她和丈夫共同拥有这所房子。
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2
perigee
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| n.近地点 |
参考例句： |
- The Moon reaches its absolute perigee once a year.月球每年有一次达到它的绝对近地点。
- Once the satellite reaches perigee,it will eject a small probe which enter the planet's atmosphere.当人造卫星达到近地点时，就会发射一根小探针，这根探针将进入行星的大气层。
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3
apogee
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| n.远地点；极点；顶点 |
参考例句： |
- The orbit of the artificial satellite has an apogee of 200 miles from the earth.这个人造卫星的轨道，其最远点在离地球200英里的地方。
- Apogean tides occur when the moon is at the apogee of its orbit.远月潮在月球位于其轨道的最远点时发生。
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4
smoothly
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| adv.平滑地，顺利地，流利地，流畅地 |
参考例句： |
- The workmen are very cooperative,so the work goes on smoothly.工人们十分合作，所以工作进展顺利。
- Just change one or two words and the sentence will read smoothly.这句话只要动一两个字就顺了。
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5
thermal
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| adj.热的，由热造成的；保暖的 |
参考例句： |
- They will build another thermal power station.他们要另外建一座热能发电站。
- Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
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6
structural
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| adj.构造的，组织的，建筑（用）的 |
参考例句： |
- The storm caused no structural damage.风暴没有造成建筑结构方面的破坏。
- The North American continent is made up of three great structural entities.北美大陆是由三个构造单元组成的。
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