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说明：  一种新颖的拓扑结构，四开关BUCK-BOOST变换器，能够实现双向的BUCK功能，BOOST功能，而且能视情况自动切换BUCK和BOOST(A novel topology, four switch buck-boost converter, can achieve two-way BUCK function, BOOST function, and can automatically switch BUCK and BOOST as the case)

ISOIEC-15444-12-2004 标准-ISOIEC- 15444-12-2004 standard

说明：  JQuery waterfall flow arrangement style code is a jQuery waterfall flow code based on gridify. JS plug-in

its a code packages for image segmentaion

说明：  stata做时间序列数据( Time series data )，截面数据( Cross-sectional data )和面板数据( Panel data )的内生性检验(Stata tests the endogeneity of time series data, cross-sectional data and panel data)

北航计算机组成原理测试题目（附参考答案） 包括： 作业1,2,3,5,6.(Northern computer composition principle test questions (with suggested answers) include: Job 1,2,3,5,6.)

收集互联网上各种实用 LaTeX 中文模版，并适配至 CTeX 套件 2.9.2.164 版本。(latex following boards)

603型号六轴机器人的示教器控制源码，机器人运动控制算法需另写。(Model 603 six axis robot controller control source.)

说明：  利用GPS的PPS脉冲对系统主板的RTC（系统实时时钟）进行校时。(Using PPS pulse of GPS to calibrate RTC (system real time clock) of system main board.)

说明：  用matlab识别简单的形状，如三角形，圆，椭圆，矩形，正方形等(Recognition of Simple Shapes with MATLAB)