说明：数字常数及1超出范围。

Explanation: Numeric constant &1 out of range.

youdao

数字e有时候也被称为欧拉系数或者欧拉常数，是数学运算中非常重要的数字之一。

The number e, sometimes called Euler's number or Napier's constant, is one of the most important Numbers in mathematics.

youdao

接下来我将会称这一部分为几何因子，我将把它们整合在一个数字里，我将会标注它为马德隆常数。

And I am going to call this whole geometric factor here, I am going to put it into one number, and I am going to denote that the Madelung constant.

youdao

And I am going to call this whole geometric factor here, I am going to put it into one number, and I am going to denote that the Madelung constant.

接下来我将会称这一部分为几何因子，我将把它们整合在一个数字里，我将会标注它为马德隆常数。

麻省理工公开课 - 固态化学导论课程节选