云南地区S波速度结构具有很强的横向不均匀性。
In Yunnan region, s wave velocity structures show strong horizontal heterogeneity.
由于空中大气介质的不均匀性使得电波传播速度减慢射线产生弯曲，从而产生折射误差。
The radio wave propagation velocity is slowed and the ray producing bend but to the asymmetry of the atmospheric medium, the refraction error is produced.
并对速度横向不均匀性及其与地质构造、地震活动的关系进行了探讨。
Then the relationship between the lateral velocity heterogeneity and geological structures and seismicity is discussed.
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