2) To or on a field.
上战场，在战场上
3) wave field upward continuation
波场上延
1.
"wave field downward continuation" and "wave field upward continuation" are valid way to solve the problem of irregular surface migration.
双复杂条件下的叠前深度偏移方法是解决复杂地表条件和复杂地质构造成像的有效手段,基于"逐步累加"的"直接下延"法和"波场上延"法都是解决复杂地表成像的有效手段。
2.
According to zero velocity layer brought out by Beasley and Lynn,and the method of summation step by step put forward by Reshef,and the characteristics of wave propagation in real media and wave stacking,the method of wave field upward continuation to realize wave-equation pre-stack depth migration and imaging based on phase shift(in time.
借鉴Beasley和Lynn提出的“零速层”的概念与Reshef提出的“逐步累加”法的思路,根据地震波在真实介质中的传播特性及波的可叠加性,利用“波场上延”法,实现基于相移(时间域)法上延和频率空间域有限差分(深度域)法(ω-xFD)上延的波动方程法叠前深度偏移成像。
5) upper current field
上层流场
1.
A three-dimensional baroclinic model with a free surface has been employed to calculate the response of upper current field to Frankic (9606) severe tropical storm in South China Sea (SCS).
本文用一个三维、自由表面、斜压海洋模式计算了南海上层流场对Frankic(9606)强热带风暴的响应。
6) importance in matches
场上作用
补充资料：上场
1.指演员或运动员出场。 2.泛指某种活动开始进行。 3.犹言上手，得手。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条