There may be widespread changes in ground elevation as well as horizontal or shear displacements.
标高可能发生广泛的变动，也可能发生水平位移或剪切位移。
By means of the existing measurement control points on the ground elevation for lofting, determine the excavation depth.
利用已有的丈量控制点对原地面高程进行放样，确定开挖深度。
A direct result of land subsidence in Cangzhou coastal plain areas of low ground elevation loss, resulting in sinking of the railway roadbed, storm surge disasters.
地面沉降直接导致沧州滨海低平原地区地面高程资源损失，造成铁路路基下沉、风暴潮灾害加重。
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