annual surface flow的用法和樣例：
例句
- The square ratio method and basin precipitation method are commended for annual runoff calculation.
在年徑流計算中，建議采用面積比法和流域雨量法。 - 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.
文中給出基于尺度能量參數的子波變換中尺度與波長(cháng)的關(guān)系，并且分析了一組黃河上游年徑流量數據。
