中国发射中继卫星用于探测月球背面
文章来源:未知 文章作者:enread 发布时间:2018-05-21 01:28 字体: [ ]  进入论坛
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China launched a relay satellite early Monday to set up a communication link between Earth and the planned Chang'e-4 lunar probe that will explore the mysterious far side of Moon.
 
周一早间,中国发射一颗中继卫星用于在地球与计划发射的嫦娥四号月球探测器建立通讯连接。该探测器将探索神秘的月球背面。
 
The satellite, named Queqiao (Magpie Bridge), was carried by a Long March-4C rocket that blasted off at 5:28 a.m. from southwest China's Xichang Satellite Launch Center, according to the China National Space Administration (CNSA). 
 
"The launch is a key step for China to realize its goal of being the first country to send a probe to soft-land on and rove the far side of the Moon," said Zhang Lihua, manager of the relay satellite project.
 
About 25 minutes after liftoff, the satellite separated from the rocket and entered an Earth-Moon transfer orbit with the perigee1 at 200 km and the apogee2 at about 400,000 km. The solar panels and the communication antennas3 were unfolded.
 
Queqiao is expected to enter a halo orbit around the second Lagrangian (L2) point of the Earth-Moon system, about 455,000 km from the Earth. It will be the world's first communication satellite operating in that orbit.
 
But the mission must overcome many challenges, including multiple adjustments to its orbit and braking near the Moon and taking advantage of the lunar gravity, Zhang said.


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1 perigee CMyx4     
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。
2 apogee roiy0     
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。
3 antennas 69d2181fbb4566604480c825f4e01d29     
[生] 触角,触须(antenna的复数形式)
参考例句:
  • Marconi tied several antennas to kites. 马可尼在风筝上系了几根天线。 来自超越目标英语 第3册
  • Radio astronomy today is armed with the largest antennas in the world. 射电天文学拥有世界上最大的天线。
TAG标签: moon launch satellite
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