annual surface flow

• 年径流

annual surface flow的用法和样例：

例句

1. The square ratio method and basin precipitation method are commended for annual runoff calculation.
   在年径流计算中，建议采用面积比法和流域雨量法。
2. The relationship between the scale and the wavelength is given, and a natural annal flow time series in the upper reach of the Yellow River is analyzed.
   文中给出基于尺度能量参数的子波变换中尺度与波长的关系，并且分析了一组黄河上游年径流量数据。