说明：小型科学计算器的功能的实现，也可以进行加减乘除等等的运算。

Small scientific calculator functions to achieve, you can also carry out arithmetic operations, etc.

youdao

说明：小型科学计算器的功能的实现，也可以进行加减乘除等等的运算。

Small scientific calculator functions to achieve, you can also carry out arithmetic operations, etc.

youdao