提出一种更新移动目标最短路径树的近似算法来避免重新生成整棵路径树。
This paper presents an approximate algorithm for updating the shortest path tree of moving target to avoid re-generate the whole tree.
然后,对波阵面作一近似,在此基础上,用最小走时最短路径射线追踪法完成正演。
Then, with some approximation to the wave front section, the forward modeling can be achieved through the ray tracing method based on the minimum traveling time and the shortest traveling trace assum.
本文给出了一组改进的估算同步发电机在空载状态下发生出线端突然短路时可能达到的最大电磁转矩近似表达式。
The double-winding generators were analyzed using a method for analyzing the electromagnetic torque after a sudden short circuit in a 3-phase synchronous generator.
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