基于安卓的计算器程序，实现加减乘除以及括弧功能-Android-based calculator program to achieve functional Math and brackets

这是一款用易安卓编写的手机版钢材计算器，再也不用那么繁琐的记录公式了，里面自带各种钢材计算公式，套用即可。-This is a version of the mobile phone version of the calculator prepared by Yi Anzhuo, no longer so cumbersome recording formula, which comes with a variety of steel formula, can be applied to.