向下
发表于 2025-3-28 17:58:49
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PACK
发表于 2025-3-28 22:44:15
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得意牛
发表于 2025-3-29 02:33:52
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总
发表于 2025-3-29 07:03:54
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种族被根除
发表于 2025-3-29 08:03:08
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不公开
发表于 2025-3-29 12:54:29
Green Concept of Ports and Transition Modeleriodic, and singular solutions that may have practical significance. The Davey–Stewartson equations are used to describe the long time evolution of three-dimensional packets of surface waves. Assuming that the argument functions are quadratic in spatial variables, we find various exact solutions for the Davey–Stewartson equations.