四阶收敛迭代

说明：  本软件用于计算不同边界条件下均匀直梁横向、纵向前三阶固有频率。(The software is used to calculate the first three natural frequencies of the transverse and longitudinal direction of a uniform straight beam under different boundary conditions.)

说明：  surfer软件模型转化到3dec直接应用的小程序(Small program of transforming surfer software model into 3DEC direct application)

说明：  基于光电信号的的血氧饱和度计算，matlab的代码，请参考(Based on the photoelectric signal of blood oxygen saturation calculation, MATLAB code)

说明：  将CATIA数据里面的2层和3层焊点，批量生成point点。(Two and three layers of solder joints in CATIA data are generated in batches.)

潮流计算，节点导纳矩阵，雅克比矩阵，牛顿拉夫逊法(Power flow calculation, the node admittance matrix, the Jacobian matrix, Newton Ralph)

空间计量Elhorst的所有程序，已经加载了matlab的计量程序，可以通过修改读入文件的路径一次性成功。(All the procedures of spatial mathmetrics by Elhorst, which can be successfully operated once by modifying the path of reading files.)

说明：  混沌工具箱，能很好的学习和了解混沌，包括绘制吸引子、分岔图、lyapunov指数等(Chaos toolbox can learn and understand chaos well, including drawing attractors, bifurcation graphs, Lyapunov exponents, etc.)

将flac3.0代码转换为flac5.0代码(Convert flac3.0 code to flac5.0 code)

脉冲积累的改善因子和损失的计算，也有积累与非积累的对比关系图(There is also a contrast relation between accumulation and non accumulation in the calculation of pulse accumulation improvement factor and loss)

西门子变频器t300说明书，分享给各位，希望能通过(The installation, connection and commissioning of the equipment and modules is not described here. These are provided in sufficient detail in the Instruction Manual of the equipment.)