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.
采用连续流动交换法研究了供试土壤钾素吸附和解吸的动力学特征。
Kinetics of adsorption and desorption characteristics were studies using continuous flowing method.
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