片语
contra-arithmetic series反算术级数
arithmetic progression等差级数,等差数列;[数] 算术级数,算术数列
arithmetic progression arithmetic series等差数列
arithmetic geometric series算术几何级数
arithmetic equal power series算术等幂级数
sum of arithmetic series等差数列求和
arithmetic series factor等差级数因数
spurious arithmetic series伪原始数列