Central factorial moment
[计] 中心阶乘矩
🧩 词语组成解析
factorial
['fæktɔ:riəl]
adj. 因子的，阶乘的;
n. 阶乘积，阶乘;
🗣️ 情景例句
How well do I speak English?
我的英文说得怎样？
I've never read a more exciting story.
我没有读过比这更振奋人心的故事。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。