如果能够找出相似性，就可以通过相似性来处理水文尺度问题。
If we can find some similarity, we may treat the hydrological scale problem by the similarity.
提出立足于产汇流机理研究，建立基于RS和GIS的耦合水文模型是研究的趋势，尺度问题仍然是关注的焦点。
Study on mechanism of runoff and streamflow has great foreground to build hydrological model coupled with GIS and RS, and hydrological scale problems should always be paid attention to.
雷达测雨的误差以及水文模型自身的结构和尺度问题等的复杂性，导致了水文预报的精度不理想。
The errors of radar rainfall measurement and the complexity of hydrological model have led to lowed accuracy for hydrological prediction.
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