工科数理方法课程教改探索

针对工科数理方法存在的课时少、难度大、内容陈旧等问题 ,提出自己的一些教学改革的思路 .     

描绘小电珠的伏安特性曲线实验

“描绘小电珠的伏安特性曲线”是高中物理新大纲增加的实验，为了启发同学们的思维，下面从如何设计这个实验的角度，谈一谈对这个实验课题的思考．     

Structural Equation and Mei Conserved Quantity of Mei Symmetry for Appell Equations with Redundant Coordinates

Structural equations and Mei conserved quantity of Mei symmetry for Appell equations in a holonomic system with redundant coordinates are studied. Some aspects, including the differential equations of motion, the definition and the criterion of Mei symmetry, the form of structural equations and Mei conserved quantity of Mei symmetry of Appell equations for a holonomic system with redundant coordinates, are also investigated. Finally, an example is given to illustrate the application of the results.