Water resources assessment is the base of water resources reasonable utilization, protection and uniform management.

水资源评价是水资源的合理开发利用 、 水资源保护和水资源统一管理的基础.

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The difference between the calculation and water resources assessment has been mainly introduced in the paper.

通过介绍还原水量计算方法,阐述了河川径流量与水资源量的区别.

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