卫星图像都是沿卫星飞行方向而获取的切平面投影图像。
All satellite image are tangent plane projection obtained along the flight direction of satellite.
过去，美国的人造卫星曾在控制下相会，或者是与其他飞行器对接。
In the past, US satellites have been commanded to approach and dock with other spacecraft.
先前的不明飞行物现在已经查明了是卫星。
The previously unidentified object has now been definitely ascertained as satellites.
一些人造卫星现在正环绕地球飞行。
卫星在它的固定轨道里绕地球飞行。
卫星在它的固定轨道里绕地球飞行。
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