volumetric water content meaning in Chinese

体积含水量

On the basis of the theory about water potential in soils , a partial differential equation of water movement in unsaturated soils is derived , which chose volumetric water content as the control variable . the numerical solution of the equation using finite difference method is discussed in this paper , and the modality to calculate water movement in slope considering rain infiltration
基于非饱和土的土水势理论，本文推导了以体积含水率为因变量的二维非饱和土的水分运动方程，并给出了用有限差分法来求解此偏微分方程的方法，得到了考虑降雨入渗影响的土坡水分运动的计算程式。