Perl

一、 实验目的 1. 掌握典型序列的产生方法。 2. 掌握DFT的实现方法，利用DFT对信号进行频域分析。 3. 熟悉连续信号经采样前后频谱的变化，加深对时域采样定理的理解。 4. 分别利用卷积和DFT分析信号及系统的时域和频域特性，验证时域卷积定理。 二、实验环境 1． Windows2000操作系统 2． MATLAB6.0(First, the purpose of the experiment 1. master the method of producing typical sequence. 2. master the realization method of DFT and use DFT to analyze the signal in frequency domain. 3. familiar with the change of the frequency spectrum before and after the continuous signal sampling, deepen the understanding of the time domain sampling theorem. 4. the time domain and frequency domain characteristics of the convolution and DFT analysis signals and systems are used to verify the time domain convolution theorem. Two. Experimental environment 1. Windows2000 operating system 2. MATLAB6.0)

pfc 裂缝检测，通过fish语言动态检测裂缝(Crack tracking detection for pfc)

一个很不错的评标系统，欢迎下在，做评标的可以参考，本人觉得确实不错-A very good evaluation system, welcome in, can make the evaluation of reference, I feel really good

说明：  PHP小程序商场源码，可用于下载测试版本(PHP applet shopping mall source code, can be used to download the test version)

Delphi 卡片填涂助手源码，没搞明白这个小程序的用途，反正在Delphi7环境下可以顺利编译，运行界面如图所示，信息卡填涂助手，不知道基于什么数据库，送给喜欢Delphi的朋友研究吧。

说明：  一行一个,附带命令行,如果启动失败,在命令行前加一个空格(Line by line, with a command line. If startup fails, add a space before the command line.)

说明：  纯代码打造名字打散，哈哈哈哈哈哈哈哈哈哈哈哈(Pure Code Creating Names Dispersed)

线索二叉搜索树结点的插入删除以及树的打印。-clues two forks search tree node of the tree to insert, delete and print.

说明：  诺瓦泰IE86解算软件使用说明书，测绘以及航拍行业软件InertialExplorer860的使用说明书(Novotel IE86 Solution Software Instructions, Surveying and Mapping Industry Software Inertial Explorer 860 Instructions)

RTKlib精密单点定位PPP更改后代码，支持北斗、GPS(RTKlib precise point positioning, PPP change the code, support Beidou, GPS)