Common focus point (CFP) migration based on the equal travel-time principle is a kind of pre-stack depth migration method through focusing in both emission and detection.
共聚焦点(CFP)偏移是基于等时原理，通过激发聚焦和检波聚焦的双聚焦实现叠前深度偏移的地震成像方法。
The air pollution and odor wet e caused by the waste gas from the refinery that is controlled emission in high stack and uncontrolled leakage.
炼油厂在生产过程中产生的废气，有组织高架源排放及无组织泄漏释放，易引起空气污染及恶臭危害。
The air pollution and odor wet e caused by the waste gas from the refinery that is controlled emission in high stack and uncontrolled leakage.
炼油厂在生产过程中产生的废气，有组织高架源排放及无组织泄漏释放，易引起空气污染及恶臭危害。
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