daily turn around

In this paper,we use the spherical surface triangle to study the sun circle daily turn around.

主要运用球面三角研究了太阳周日视运动规律,通过定量的角度得到了太阳周日运动的特征及其与纬度、季节变化之间的关系。

By means of the Lagrange Multiplier, this paper points out the position of celestial bodies when their azimuth varies the slowest during diurnal motion, thus consummating the conclusion concerned.

用拉格朗日乘数法确定天体周日视运动过程中方位变化速度最慢点的位置，从而使有关结论完整化。

The altitudes of a celestial body are always changing during its diurnal apparent motion,which affects directly the quality of celestial observations.

天体周日视运动过程中天体的高度不断变化,对天体观测的质量有直接的影响,通过分析天体周日视运动过程中天体高度的变化率,给出不同观测时机进行天体高度观测的特性,并用曲线图的形式给出天体高度变化率的极值点和零值点。