环月轨道 [
huán yuè guǐ dào]
[航] lunar orbit
- 欧洲的“智能1号”2003年就进入了环月轨道,并且欧洲空间局拟定了新的计划。
Europe's SMART-1 entered lunar orbit in 2003, and the ESA wants to go back. - 这个环月轨道最终会在大约月球上31英里左右。
The orbit eventually will be circularized at about 31 miles above the moon. - 对自环月轨道开始的月球软着陆制动段飞行轨迹和制导律进行了研究。
The descending trajectory and the guidance method were presented for the braking phase of lunar soft-landing from a circular orbit.
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