讨论了天文重力水准的误差及垂线偏差非线性影响等问题。
Futhermore problems of the error of astro gravimetric leveling and the nonlinear influence are discussed.
介绍当今确定天文大地垂线偏差的新仪器———CCD自动天体测量仪和确定两点间高程异常差的新方法。
A new means of determining astro geodetic deflection of the vertical CCD automatic astrometer and the new method to determine the difference of height anomalies between two points are described.
本文分析了引起强震前天文测时测纬异常现象的原因问题，认为这种异常主要是地下水活动引起垂线变化的结果。
The question of the cause of the anomalous deviation of the results of the astronomical time and latitude determinations before a strong earthquake has been analysed in this paper.
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