In contrast to other similar schemes based on characteristic method, the C-I scheme gives a clear view for down-going and upcoming wave fields.
与基于特征法的其它类似方法相比，C - I法给出了下行和上行波场更明确的描述。
This morning, he is going to walk down the front steps, wave his hand and start on his great adventure that will probably include wars and tragedy and sorrow.
可是现在-一切都将发生变化。今天早晨，他走下屋前的台阶，挥挥手，即将踏上他伟大的冒险征途，途中也许会有战争、悲剧和伤痛。
The wave-field continuations along up-going wavefront or down -going wavefront are the two methods we can take to ensure the all -dip migration of wave field.
沿上行波波前或下行波波前进行波场延拓是确保波场全倾角归位仅能采用的两种延拓方法。
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