The radial-tracing algorithm and the effective earth model are discussed.
讨论了大气折射的射线追踪算法和等效地球模型；
Taking effective greening measures will be very helpful to protect our unique earth.
采取有效的绿化措施对保护我们唯一的地球是很有帮助的。
Particularly, it is most effective to use this method in long period earth tidal analyses.
这种方法运用于长周期潮分析特别有效。
Particularly, it is most effective to use this method in long period earth tidal analyses.
这种方法运用于长周期潮分析特别有效。
应用推荐