...正交变换法 关键词 [gap=750]Keywords: Quadratic form; Standard form; Method of completing square; Method of orthogonal transformation ...
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提出了溶洞和井筒连接的试井偏微分方程数学模型，并采用正交变换法得到了其解析解。
In this paper, we found Large-scale cave and shaft connected Test partial differential equation model, and obtain its analytical solution by orthogonal transformation metho.
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