清单7给出的宏定义使用这些函数定义了算术符号。
Listing 7 shows the macro definition to define math symbols using these functions.
分析的算术符号正负倒转；
The arithmetic signs in the analysis are, as it were, reversed;
算术符号是书写出来的图形，而几何图形是绘画出来的公式。
Arithmetical symbols are written diagrams and geometrical figures are graphical formulas.
应用推荐