通过银川平原地下水水化学资料分析，证实这种水化学图可用于确定地下水的水化学类型，并进行水文地球化学规律研究。
This paper analyzes systematically the hydrochemical types and the hydrochemical characteristics of surface water and groundwater in the different aquifers in the Heihe River watershed.
然而，这些图可以提供极有价值的信息时，将结果与实验工作和与水化学知识好。
However, these diagrams may offer extremely valuable information when combining the results with the experimental work and with a good knowledge of aqueous chemistry.
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