The hydrology is a science to study natural water movement, the change state and rule of the water quantity and quality in time and space.
水文是研究自然界水的运动、水的数量和质量在时间和空间上变化状况及变化规律的一门学科。
The hydrology is a science to study natural water movement, the change state and rule of the water quantity and quality in time and space.
水文是研究自然界水的运动、水的数量和质量在时间和空间上变化状况及变化规律的一门学科。
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