As a coelostat, MA tracks the motion of celestial objects observed at their meridian passages.
MA作为定镜跟踪体的运动,望远镜在体中进行观测。
As a coelostat, MA tracks the motion of celestial objects observed at their meridian passages.
MA作为定镜跟踪体的运动,望远镜在体中进行观测。
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