For example, at pore-water pressures of zero and greater, (i.e. below the water table), there is a saturated conductivity value; at pore-water pressures less than zero, (i.e. above the water table), the hydraulic conductivity is zero.
For example, at pore-water pressures of zero and greater, (i.e. below the water table), there is a saturated conductivity value; at pore-water pressures less than zero, (i.e. above the water table), the hydraulic conductivity is zero.
比如：当孔隙水压力大于等于0(如位于水位以下)，有一个饱和的导水值；当小于0时(如在水位以上),导水性为0。