They are the curvature corrections for recording time at the determined zenith distances when a star passes the prime vertical and the meridian circle.
卯酉方向天顶距的星径曲率改正以及子午方向天顶距的星径曲率改正。
They are the curvature corrections for recording time at the determined zenith distances when a star passes the prime vertical and the meridian circle.
卯酉方向天顶距的星径曲率改正以及子午方向天顶距的星径曲率改正。
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