其河川
Its stream
以上为机器翻译结果，长、整句建议使用 人工翻译 。
河川径流作为水循环水文要素之一，由于受人类活动、流域气候及自然地理等因素的综合影响，其变化呈一个非线性动力系统。
As one of the main hydrological factors of the water cycle, river runoff is affected by human activities, watershed climate and geographical factors, and its change is a non-linear dynamical system.
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