3D星空动画特效

说明：  pb生成二维码_125生成二维码生成二维码(Generating two-dimensional codes,)

家电维修源码自用的 家电维修源码自用的(jiadianweixiuyuanma ziyongde)

我不太懂这个是不是有用的 希望如果没有用帮我删掉……抱歉啦-I do not quite understand this is not useful, if not used to help me ... sorry deleted Matata

hi welcome just try to enjoy welcome againr

根据接收信号构造协方差矩阵，并对协方差矩阵进行特征值分解。(The covariance matrix is constructed according to the received signal, and the covariance matrix is decomposed by eigenvalue decomposition.)

1. 5 slaves talk to master with fixed data size Algorithm:CSMA/CA(Carrier sense multiple access with collision avoidance) - waiting period before sending(check if channel is idle) - collision happend random backoff

以前做的一个数字钟-before doing a digital clock

说明：  通过点云三维坐标，构件可用于3D打印的stl文件(Through point cloud three-dimensional coordinates, components can be used for 3D printing STL files)

斯皮尔曼相关性，斯皮尔曼系数一般有两个公式，由排行差分集合d计算而得（公式一）由排行集合x、y计算而得（斯皮尔曼等级相关系数同时也被认为是经过排行的两个随机变量的皮尔逊相关系数，以下实际是计算x、y的皮尔逊相关系数）（公式二）(different types functions)

自动查询虚龄和实龄，输入年月日后自动显示(Automatic query virtual age and chronological age, automatic display date input)