论文标题
双面近似和计数方法
The two-sided approximation and counting method
论文作者
论文摘要
在下面，我们总结了两面方法的外观和可能用途以及在（中学）数学最多样化领域的双面计数。
Below, we summarize the appearances and possible uses of the two-sided approach and the two-sided counting in the most diverse areas of (secondary) school mathematics.
