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- The authors propose a migration velocity analysis method based on a global optimization. 提出用全局最优化偏移速度分析方法求取介电常数分布。
- As an inverse problem,migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image-point gathers(CIGs). 作为一种反问题方法,偏移速度分析利用共成像点道集上的剩余曲率成像点来反演速度模型。
- Since offset ray parameter is proportional to angle of incidence at the reflector, CAI gathers provide a complete set of tools for migration velocity analysis and AVO analysis. 由于照射角和炮检距的对应关系 ;共照射角像集又为偏移速度分析和AVO(振幅随炮检距变化 )分析等提供了有力工具 .
- As an inverse problem, migration velocity analysis tries to infer the velocity model from the picked residual curvatures on common image point gathers (CIGs). 作为一种反问题方法，偏移速度分析利用共成像点道集上的剩余曲率成像点来反演速度模型。
- This thesis bases on the acoustic wave equation, uses the wavefield extrapolation operator in frequency-wavenumber domain to analyze the migration velocity error. 声学波动方程描述了声波动现象的物理本质，本文基于声学波动方程，借助于频率波数域的波场延拓算子来开展偏移速度误差的分析。
- In the experiment pit, the migration velocity was 2.27cm/d under an artificial condition of 5mm/h sprinkling intensity for 3 hours each day, the vertical diffusivity Dx was 7.75cm2/d. 在2m2实验坑中，以5mm/h喷淋强度每天喷淋3h的条件下，氚示踪剂以2.;27cm/d的速度向下迁移， DX为7
- After reviewing the basic principle of the migration method based on double-square-root (DSR) equation, we introduce a fast angle domain imaging algorithm to facilitate migration velocity analysis. 摘要简单回顾双平方根(DSR)方程偏移一般理论之后，介绍了适应偏移速度分析的角度域成像快速算法。
- For enhancing the migrated imaging，these techniques，like DMO，migration velocity field smoothing and pre-stack depth migration，are used. 采用DMO、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。
- ON THE MIGRATION VELOCITY OF PARTICLES 浅谈粒子的驱进速度
- Residual migration velocity analysis 剩余偏移速度分析
- Gazelles can move with astonishing velocity. 羚羊跑起来速度惊人。
- Lashing velocity of pump is concerned with nature of air. 泵的抽气速率与气体的性质有关。
- Scientists have studied the migration of fish over long distances. 科学家研究过鱼类远距离回游的现象。
- The car was moving at such a velocity! 那辆汽车的速度简直太快了！
- Gazelles can movewith astonishing velocity. 羚羊跑起来有时速度惊人。
- The hare darted off with the velocity of a bird. 野兔像鸟一样快速掠去。
- A METHOD OF CREATING P-P AND P-SV WAVE PRESTACK DEPTH MIGRATION VELOCITY MODEL P-P波及P-SV波叠前深度偏移速度模型建立方法
- There has been a migration of people from the country to the towns. 人们从乡下移居城镇。
- The velocity of light is about 186,000 miles per second. 光速大约是每秒十八万六千英里。
- There was a huge migration of people into Europe because of the war. 因为战争，大量的移民涌入欧洲。
