Based on the Erlang Mountain Tunnel, the paper introduces application of EGM96 in correction of perpendicular deviation in plane network.
基于二郎山隧道工程，介绍了EGM96在平面网中垂线偏差改正的应用。
Based on the Erlang Mountain Tunnel, the paper introduces application of EGM96 in correction of perpendicular deviation in plane network.
基于二郎山隧道工程，介绍了EGM96在平面网中垂线偏差改正的应用。
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