delusion
发表于 2025-4-1 03:40:04
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Obvious
发表于 2025-4-1 08:51:43
Introduction to Nonlinear Wave Dynamics,x wave amplitudes in continuous media, will be obtained, the general structure of the Hamiltonian function (.) for small-amplitude waves, irrespective of their physical nature, will be studied, and the dynamic perturbation theory will be formulated, so that nonresonant terms from the Hamiltonian of interaction should be excluded.
即席演说
发表于 2025-4-1 12:48:04
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