算数表达式解析器，用于验证过程中的表达分析…

测试蓝本，请留意，功能很全的，可以参照，减少工作量。-testing blueprint, please note that the very function of the whole, it can refer to reduce the workload.

BTX250汽车功放电路原理图 PDF格式-BTX250 car amplifier circuit schematics PDF format

linux 贪吃蛇 GCC编译 在终端下进行游戏，不需要打开xwindow-Snake GCC compiler linux in a terminal under the games, without having to open XWindow

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

c++编程的一些简单例子-some simple examples

以“带行逻辑链接信息”的三元组表作为稀疏矩阵的存储结构；实现两个矩阵相加、相减、相乘运算；运算结果以阵列形式输出。-Sparse matrix computation

第一次提出CurveLab 处理技术的文章，-first raised CurveLab processing technology articles,

GSM模块的串口操作源码，项目验证通过，可以通过PC机打电话，收发短消息，功能强大！-GSM module serial operation source, the project through certification, through PC phone, Sending and Receiving Short Messages by. Powerful!

这是一个集合聊天和资料传诵的软件。他可快速的传送电影，文字，图片等 -This is a combination of chat and information passed down through the software. He may rapid transmission film, words and pictures