magnate 发表于 2025-3-30 11:46:27

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angiography 发表于 2025-3-30 12:49:05

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查看完整版本: Titlebook: Solving Elliptic Problems Using ELLPACK; John R. Rice,Ronald F. Boisvert Book 1985 Springer-Verlag New York Inc. 1985 Helmholtz equation.d