5.餐厅点餐系统（源码+数据库）

an introduction to java and classes

说明：  ery幻灯片，可支持鼠标滚轮控制图片360度旋转，带有图片(Ery slides, which can support mouse wheel to control 360 degree rotation of pictures, with pictures)

说明：  基于粒子群算法的电力系统经济调度，程序可运行。(Power system economic scheduling based on particle swarm optimization algorithm, the program can run.)

说明：  超声波测距并且oled显示，误差小，精度高，基于51单片机(Ultrasonic ranging and OLED display, small error, high precision, based on 51 single chip microcomputer)

继承、多继承、虚继承的使用！ 如果要想使一个公共基类在派生类中只产生一个基类子对象，则必须将这个基类设定为虚基类。-inheritance, multiple inheritance, the use of virtual inheritance! If we want to make a public base class in the derived class only have a base class Object son, they would have to set the base class for virtual base class.

京东商城的秒杀 再也不用担心手慢 网卡而抢不到东西了(You need this app that very good and you can do it youwhat to do)

孤岛效应正向偏移法仿真图及s函数 可以用，能仿真(-Islanding effect positive offset method simulation diagram and the s function can be used, can simulation)

行业软件,该源代码为道路设计纵断面典型的计算程序,该程序界面友好,计算准确,值得借鉴-industry software, the source code for the design of roads profile of the typical calculation procedures, the procedures friendly interface and more accurate calculation worth learning

牛顿－拉夫逊法潮流计算 基本步骤： 　　（1）形成节点导纳矩阵 　　（2）将各节点电压设初值U， 　　（3）将节点初值代入相关求式，求出修正方程式的常数项向量 　　（4）将节点电压初值代入求式，求出雅可比矩阵元素 　　（5）求解修正方程，求修正向量 　　（6）求取节点电压的新值 　　（7）检查是否收敛，如不收敛，则以各节点电压的新值作为初值自第3步重新开始进行狭义次迭代，否则转入下一步 　　（8）计算支路功率分布，PV节点无功功率和平衡节点柱入功率。-Newton-Raphson method flow calculation basic steps : (1) formation of nodal admittance matrix (2) to set up the initial node voltage U, (3) the initial node-generation-related demand. calculated that the constant term formula Vector (4) nodes will be incorporated into the initial voltage-seeking, calculated Jacobian matrix elements (5) solving that equation, seek to amend the vector (6) to strike a new node voltage value (7) to check whether convergence, if not restrained. concentrated in the nodes of the new voltage as the initial value since the first three steps to re-start the narrow iterations. Otherwise, turn into the next (8) Calculation branch power distribution, PV nodes reactive power and balance-node into powe

系统采用Microsoft公司C#.NET(GDI+)技术开发,转载-system using Microsoft C#.NET (GDI) technology development, reprinted