高中使用计算器，包括代数运算、物理运算、几何运算-High school practical calculator, including algebra, set operations, physical operation

机械零件分解为基本几何元素组合的重量计算器-Mechanical parts decomposed into basic geometric elements combined weight calculator

用MFC计算cos，sin值，判断2个圆是否相交；判断3条边能够构成三角形等几种功能的计算器(Use MFC cosine and sine value, whether two circular intersection;Determine three side can constitute a triangle several functions such as calculators)