A reciprocal theorem of dynamics for potential flow problems is first derived by means of the Laplace transform in which the compressibility of water is taken into account.
基于势流理论，考虑流场的可压缩性，首先利用积分变换导得了势流问题的一个动力学倒易定理。
The best transform period was secondly defined, and the best periodicity theorem for cat map was given.
定义了矩阵变换的最佳周期概念，给出了猫映射的最佳周期性定理。
The best transform period was secondly defined, and the best periodicity theorem for cat map was given.
定义了矩阵变换的最佳周期概念，给出了猫映射的最佳周期性定理。
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