粗糙表面压力摩擦力及摩擦系数之间的关系，高斯分布 Yali

利用netcd库 python语言读取nc气象文件(Using Python language of netcd library to read NC meteorological files)

说明：  双三相永磁同步电机simulink仿真，包括SPWM模型等(Double three phase permanent magnet synchronous motor)

使用MATLAB/SIMULINK创建汽车整车模型，进行汽车整车仿真。(Using MATLAB/SIMULINK to create a vehicle model, vehicle simulation.)

说明：  维纳滤波算法，可以实现对语音信号的降噪，效果还可以(Wiener filtering algorithm, it can achieve noise reduction on speech signals)

说明：  bug 2 algorithm to avoid obstacles (code in matlab)

使用白塞尔方法进行大地主题解算，正算由大地线和大地方位角计算经纬度，反算有经纬度计算大地线长度和大地方位角(Using the white Searl method to solve the geodetic problem, we calculate the longitude and latitude by the geodesic and the earth azimuth, and calculate the geodesic length and the large local angle by calculating the longitude and latitude)

说明：  基于光混频器和锁相环的零差相干通信仿真模块，可观察锁相动态过程(Simulation of Homodyne Coherent Communication Based on Optical Mixer and PLL)

大气辐射传输模型，求大气透过率和辐射亮度(Atmospheric Radiation Transport Model to Calculate Atmospheric Transmittance and Radiation Brightness)

该程序是利用Matlab编写，用于RVE单元。施加周期性边界可以根据源码进行学习PBC原理。(The program is written in Matlab and used in RVE unit. Periodic boundaries can be applied to learn PBC principles based on source code.)

煤矿通风系统模拟仿真软件，可以模拟矿井通风系统的运行，优化通风系统的功能。(The simulation software of mine ventilation system can simulate the operation of mine ventilation system and optimize the function of ventilation system.)