arithmetic series meaning in English

等差级数
算术级数

There is a shorthand notation using " . . " for arrays whose elements form an arithmetic series
对于数组成员形成数列arithmetic series的数组， javafx提供了一种简写符号： “
As mentioned above you can define an array of numeric values that form an arithmetic series using the following syntax
如前所述，通过下面的语法你可以定义一个形成数列的数值数组。
The license plates on the cars in the convoy did not have contiguous numbers , but rather , showed the pattern of an arithmetic series
这个车队的车牌并不连续，但是却呈现出等差数列的规律。