isohyetal method的用法和樣例：
例句
- The method improves the precision of the precipitation isoline and is important to count the surface precipitation of the drainage area.
結果表明該方法提高了繪製等雨量線的質量，對於計算流域的面雨量具有重要實際意義。 - The semivariogram models built by former analysis used as the input functions for Kriging that making isohyetal maps by integrating GIS.
為具體表現本區之颱風降雨空間分佈之情形，遂以前項所得之半變異函數作為克利金推估之輸入函數，並應用地理資訊系統建立等雨量線分布圖。
