dip interface 倾斜界面
Using regular grid for discretization results in diffraction noise for dip interface, and infilling grid may increase the computing efforts.
采用规则网格进行离散，对于倾斜界面无法避免绕射噪声，若加密网格又过度增加工作量。
The dip direction and dip Angle of a subsurface interface must be first determined in three-parameter velocity analysis that needs predetermined dip Angle.
采用预求倾角法进行三参量速度分析时，首先要确定地下界面的倾向和倾角。
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