There was a great deal of focus and attention on the higher levels of this stack as well.
对于该堆栈的更高层的关注与注意也颇多。
Sometimes, rack and stack focus simply refuse to work, and you need to restart your camera.
有时候，对焦偏移和堆叠对焦就是不工作，您需要重新启动您的相机。
The activity at the top of the stack is one that's currently running - the one that is the focus for user actions.
最顶部的是正在运行的活动——用户正在关注操作的。
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。
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。
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