basic flow的用法和樣例：
例句
- Base flow separation method and isotope technique were adopted to study the cyclic relationship between river water and groundwater.
通過基流分割計算和同位素技術的應用，研究了區內地下水和地表水之間的水循環規律及地下水對黃河的貢獻。 - The ray theory of geometric optics was applied to visually investigate the propagation of quasi stationary waves in time mean basic flow and interpret the zonal nonhomogeneity.
應用幾何光學中的射線理論，直觀地討論了準定常波在時間平均基流中的傳播，解釋了定常波傳播的緯向非均勻性。
