The parabolicwave model is more reliable than the simple refraction model in bigger area with slowly -varying water depth.
对于港外大范围缓变地形水域，抛物型方程模型较传统的折射模型则更可靠。
2
The Parabolic Equation method (PE) is an approximation of the wave equation, which models energy propagating in a cone centred on a preferred direction, the paraxial direction.
抛物线方程（PE）是波动方程的一种近似形式，它假设电磁波能量在沿着抛物线轴向的锥形区域内传播。
3
Wave mathematical model of parabolic gentle slope equation is an effective method for calculating waves of wide scope.