本文讨论了大地震前天文时间和纬度观测结果的短周期异常波动涨落。
The short-period anomalous fluctuations of observations of astronomical time and latitude before major earthquakes were discussed.
测量纬度，是同学们发挥空间想象力，运用所学的天文地理，平面几何和三角函数知识来解决问题的一次演练。
Measuring latitude creates the opportunity to truely use problem solving skills, utilize students'spatial imagination and knowledge from astronomy, geography, geometry and trigonometry.
本文用云南天文台黑子目视观测资料，作出了黑子的纬度分布图。
A latitude distribution of sunspot groups is given by using the data of the visual sunspot observations made at the Yunnan Observatory.
本文用云南天文台黑子目视观测资料，作出了黑子的纬度分布图。
A latitude distribution of sunspot groups is given by using the data of the visual sunspot observations made at the Yunnan Observatory.
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