地球大气中的水汽在全球气候系统、天气动力系统、大气环境科学、水文学以及空间大地测量等方面占有非常重要的地位。
Water vapor in earth's atmosphere plays a crucial role for climate, dynamics of weather system, atmosphere environment, hydrology and space geodesy.
根据该系统的特点，将模型分解为三峡库区和坝址至湖口两大子系统，采用水文学方法进行洪水演进计算。
The system is decoupled into two subsystems, namely the upper dam site subsystem and the dam site Hukou subsystem, according to its nature. The flood routing is carried out with hydrology methods.
万泉河流域面积大、降雨分布不均匀，洪水受多种复杂因素的影响，因此采用多单元的水文学模型与河道水力学模型相结合的预报系统。
In order to study flood management problems of the Wanquan River basin, a hydrological multicell and hydraulics model has been built up to simulate complex flood routing behaviors.
基于水文学和生态学原理，对河流生态系统健康的概念进行了界定。
Based on the theory of hydrology and ecology, the concept of river ecosystem health was defined and the influence factors were analyzed.
地面径流系系统模型的研究，是涉及水文学有关汇流理论的核心问题。
The study of the surface runoff system model is the crux involving relevant concentrational flow theory in hydrology.
地面径流系系统模型的研究，是涉及水文学有关汇流理论的核心问题。
The study of the surface runoff system model is the crux involving relevant concentrational flow theory in hydrology.
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