开关量控制应用，利用板卡控制外部设备，性能可靠

A link exchange (also known as a banner exchange) is a confederation of websites that operates similarly to a web ring. Webmasters register their web sites with a central organization, that runs the exchange, and in turn receive from-A link exchange (also known as a banner exchange) is a confederation of websites that operates similarly to a web ring. Webmasters register their web sites with a central organization, that runs the exchange, and in turn receive from

ArcGISAPIforSilverlight代码，适合学习， ArcGIS之所以在行业领先，特点之一就是它能紧跟计算机发展的趋势。ArcGIS Online就是那朵天边的浮云；JavaScript API，Flex API，Siverlight API就是ArcGIS自己RIA的三驾马车。

VB6.0+MAPX开发原理-VB6.0 Connection Principle Development

GIS座标算法 非常的方便 -GIS coordinates of the algorithm is very convenient

开发gis系统时，如何创建地理数据库的教程-Gis development system, how to create a geographic database of tutorials

针对长输管道地理坐标定位问题，提出了一种基于组合导航技术并应用管道磁标处地理 信息进行分段修正的管道地理坐标定位算法． 该算法基于惯导/里程仪组合导航的基本原理，应用 误差模型对航迹误差进行修正． 通过研究陀螺仪和里程仪的误差特性，建立了陀螺仪和里程仪的 误差模型，针对低精度加速度计应用于惯性导航系统时存在速度和航迹解算误差较大的问题，提 出了应用加速度信息对里程仪速度进行修正的速度解算方法． 实验结果表明，算法解算所得位置 误差为0. 16%，可为长输管道提供三维地理坐标定位信息．

源码是基于ArcPy进行开发的对地图进行切片，然后发布到ArcGIS Server服务器上，是基于python进行开发的，如果需要就请拿去吧，这个网站不错

软件功能：本软件是专为制作启程交通伴侣地图而编写的工具，力求让用户通过简单的操作快速的制作出一幅适合启程交通伴侣使用的地图。-software : the software is designed for the production of transport departed partners maps prepared by the tools and seeks to allow users through a simple operation quickly produce a suitable partner depart traffic use maps.

超图公司的supermap objects5开发版中级教程，欢迎大家下载，共同提高-Hypgraph company supermap objects5 development version Intermediate Guide, we are happy to download, upgrade

数字摄影测量学中的后方交会，使用三个以上的控制点坐标求出外方位元素-digital photographic surveying the resection, the use of three over the control point coordinates obtained exterior orientation elements