sigal phase的用法和樣例：
例句
- This paper discusses the seepage flow characteristic of the single phase fluid in ultra-low permeable cores using experimental method.
通過實驗手段，探索了特低滲透率岩心單相流體滲流特徵。 - Difference model for calculating formation pressure of oil wells at multireservoirsingle phase unstable radial flow condition is established.
本文建立了多油層徑向單相不穩定流條件下油井地層壓力計算的差分模型。
