[MATLAB从入门到精通].周建兴.清晰版.pdf

office使用小诀窍，详细介绍了office组件的各种简单的快捷的操作方式，对于办公室人员是很好的助手。(Office use tips, detailed introduces the office components, different kinds of simple and quick operation is a good helper for the office personnel. )

说明：  目前牵引变压器差动保护原理在某些因素的影响下并不能准确地区分变压器内部故障和外部故障，可能造成保护误动或拒动，危及电气化铁道系统的安全运行。针对这一现状，建立了计及铁芯非线性特性和磁滞效应而又无需铁芯的B－H曲线数据的牵引变压器模型，提出了一种通过参数辩识理论来辩识牵引变压器绕组参数实现牵引变压器微型机保护的方法。该方法能有效地区分内部故障、外部故障和励磁涌流。仿真计算表明了该方法的正确性和可行性。(Traction transformer differential protection principle in the safe operation and can not accurately distinguish between the transformer internal faults and external faults, may be to cause protection mistaken or refuse to move, endangering the electrified railway system under the influence of certain factors. In response to this situation, taking into account the core nonlinear characteristics and hysteresis and without traction transformer core of the B-H curve data model, a the traction transformer winding identification through parameter identification theory parameters to achieve traction transformer microcomputer protection. This method can effectively distinguish internal faults, external faults and magnetizing inrush current. The simulation results show that the correctness and feasibility of the method.)

获取QQ密码 很简单的 可以试试哦(hook get QQ password so easy)

mapxtreme for java draw rangle

说明uc/os在windows下的配置，很有用哟，与大家共享~~~(uc/os in the windows configuration)

Java 生成的jar包执行方式一般有三种：(Java-generated jar package implementation modalities are generally three ways:)

很全的手册各种MOS管的信息 全系列MOS管型号参数封装资料(Full manual MOS tube MOS transistor model parameter package information)

提供一些有关电脑硬件和软件方面的小知识，以备平时解决一些电脑故障问题(Provide some information about your computer hardware and software aspects of the little knowledge)

资深工程师写的关于运放噪声分析的文档,对模拟电路工程师很有价值!(Senior engineer to write on the op-amp noise analysis of the document, right analog circuit engineers valuable!)

一个详细的程控直流、交流电源资料，详细介绍了军用高品质电源的设计方案(A detailed program-controlled DC, AC power supply information, details of the military power of high-quality design)