As we let z axis of cartesian coordinates be the inhomogeneous dimension of the media,in arbitrary angle of incidence,the amplitudes E tx and E ty are independent of coordinate axes,the amplitude E tz is dependent of z axis.

• 当选z坐标轴沿介质连续变化的方向时 ,在一般入射角度下 ,介质内透射电磁波电场振幅的Etx和Ety与z坐标无关 ,仅Etz与z坐标有关 ;