用于道路与铁路工程中对导线,中基平,计算平差及WGS84,BeiJin54,及大地坐标系之间进行转换的工具.-For road and railway projects in the wire, in Kipping, calculation and adjustment of WGS84, BeiJin54, and between the earth coordinate system conversion tool.

仿windows系统自带计算器，可实现基本的加减乘除等算术运算-caculator

多项式计算器。可以进行多个多项之间的基本运算，如加减乘除，求导积分等等。-Polymonial Caculator