Study showed natural resources of groundwater were reducing in recent years influenced by climates and human engineering activities.
研究表明，因受气候、人类工程活动等影响，区内地下水天然资源近十几年来呈逐渐减少趋势。
As a special geological disasters, loess cave on the human living environment, engineering activities against huge.
作为一种特殊的地质灾害，黄土洞穴对人类居住环境、工程活动危害十分巨大。
Nonlinear phenomena are general problems in every field of engineering technology, science research, natural world and human society activities.
非线性现象是在工程技术、科学研究以至自然界及人类社会活动的各个领域普遍存在的问题。
Phyisographic and geological setting is the internal factor, engineering activities of human being the external factor.
自然地理地质环境背景条件为内因，人类工程活动为外因。
Phyisographic and geological setting is the internal factor, engineering activities of human being the external factor.
自然地理地质环境背景条件为内因，人类工程活动为外因。
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