一些简单的的求面积球体积的简单公式，挺好用的。-Simple simple formula for finding the area of ​ ​ sphere volume, very easy to use.

一些用C写的一般数学公式，挺好用的，可以试试哦-General mathematical formulas written in C, and very easy to use, you can try Oh

易语言粒子时钟源码例程程序结合易语言多线程支持库和易语言模块GDIPlus类.ec，调用API函数实现时钟粒子的物理运动效果。 用两个物理公式伪弹性。(没有能量渐衰等) 自由落体位移公式：v=gt 物体上抛公式：h=at-4.9t^2 -Easy language particle clock source routine procedures combined with easy language multi-threaded support library and module GDIPlu

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.