Read Edit View history 等差数列 děngchāshùliè arithmetic progression Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 等差数列/等差數列 · děngchāshùliè · arithmetic progression 2026/03/04 等差数列 / 等差數列 děngchāshùliè arithmetic progression arithmetic progression 这个序列是一个公差为二的等差数列。 created sense Mar 4, 2026, 02:25 AM