现有的逆变器，有方波输出和正弦波输出的。但不能适用所有电器，正弦波输出的逆变器就没有这方面的缺点，却存在效率低的缺点。文中介绍了一款高效率正弦波逆变器。

电子商务网络购物系统-E-commerce online shopping system

闪存U盘开发电路图和固件程序-flash circuit and firmware development process

该类有以下特点： 1.支持字符串中含有各种常用函数，如"7.5+sin(6*ln(8))/exp(5)" 2.具有很好的纠错能力，能检查出表达式中括号是否配对、库函数是否正确 3.运算过程中能检查并判断出各种异常，如除数为0、开方函数sqrt(x)中x

应用背景Bà我ểU路ậN Môn pHân tíCH这ếT KếHệ日ôNGĐềTà我：酒店管理关键技术我不à李ệUđặC TảpHầN MềM区ảN LýKHáCH的ạn

数据库备份与恢复的程序-database backup and recovery procedures

学编程还是得理论过关，才能写出好的程序。 这里有学c++的经典文章，是我在学习总结出的。里面还有许多c语言大师的好哦！将陆续与大家见面。-school programming theory still have to cross the border in order to write good procedures. Here is a classic study c article, I summarized in the study. There is also the master of many c of weeks ago! And we will continue to meet.

C#聊天程序，挺不错的哦，嘿嘿，下下看 吧-C# Chat procedures, they are pretty good, oh, a little, of Lower Look here.

详细介绍了怎样用协议分析工具学习TCPIP-introduced in detail how to use protocol analysis tool for learning TCPIP

一篇文章，利用DWG格式地形图建立城DEM， 利用VBA 语言编程,提取离散高程点及其高程注记,并将高程点与高程注记匹配存储 对等高线进行有效的离散化,提取等高线的高程信息.而后将提取的高程数据在ArcGIS以三维可视化的人机交互的方式剔除粗差,最后生成DEM.-an article, the use of topographical maps DWG format established City DEM using VBA programming language. Elevation extract discrete points and elevation Note, and elevation and elevation point Note matching storage right contour effective discrete, Extracting the elevation contour information. and after extraction of elevation data to the ArcGIS 3D visualization of Human-Computer Interaction way removed gross error, the last generation DEM.