summations
n. 总和( summation的名词复数 ); 加在一起; 总结; 概括
A summation is a summary of what someone has said or done.
Her introduction is a model of fairness, a lively summation of Irish history.
她的导论是客观公正的典范,是对爱尔兰历史的生动概括。
The summations of forces in this and that directions must be zero.
在这个和那个方向上的合力必定为零.
Summations are almost invariably indicated ellipses instead of the more prevalent sigma notation.
在表示“连加”的式子中,几乎一成不变地使用省略号来代替更为流行的“∑”符号.