Arithmetical Progression

中文含义：等差数列

英语词性：noun

美式发音：/əˌrɪθˈmɛtɪkəl prəˈɡrɛʃən/

同义词：arithmetic sequence, arithmetic progression

易混淆单词：geometric progression

双语例句：

– An arithmetical progression is a sequence of numbers in which each term, after the first, is obtained by adding a constant to the preceding term.

（等差数列是一组数字，其中每一项（除第一项外）都是前一项加一个固定的常数。）

– The sum of an arithmetical progression can be found easily by using a formula.

（可以使用一个公式轻松地求出等差数列的求和。）