---

adj, n (mathematics 数) (of the) product of a whole number and all those whole numbers below it 阶乘; 阶乘的; 因数的: factorial 5 (represented as 5!), ie the product of 5 4 3 2 15的阶乘（记作5!, 为54321的乘积）.



[修改/添加解释] [回到词典]