Engineering geology zoning is an important component of the Xi 'an seismic micro-zoning project and each kind of graphic document foundation bases on it.
工程地质分区是西安市地震小区划项目的重要组成部分,是西安市地震小区划项目各类图件的基础。
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For a long time, people has systematic researched on the engineering geology zoning in Xi 'an, but the research on it involved with seismic micro-zoning was relatively small.