计算机可以快速完成求和。

Computers can quickly perform summation.

老师解释了如何进行求和。

The teacher explained how to do the summation.

这个公式的求和部分很复杂。

The summation part of this formula is complex.

我们需要对这些数字进行求和。

We need to perform a summation of these numbers.

在数学中，求和是一个基本操作。

In mathematics, summation is a fundamental operation.

本文建立了一些包含第二类中心阶乘数的求和公式。

In this paper, we establish some summation formulas involving central factorial numbers of the second kind.

由于在这样求得的和的结果中，求和指标不再出现，因此，对于用哪个字母来作这个指标是无关紧要的。

Since in the result of such a summation the summation index no longer appears, it does not matter which letter we use for it.

如果要计算未知数很多的结构，使用小型计算机能使大量求和过程更简便。

If we wish to check the structure for a significant number of hypotheses, the use of a small computer facilitates the extensive summation processes.

如果您的列表组件能够将一列数据作为一组值导出，那么该组件将被连接到求和（summation）组件，而将结果发送回另一个组件以显示总和。

If you then had a list component that could export a column as a list of values, it would be wired to the summation component with the result wired back to another component for display of the total.

通过求和再除以数量，我们可以得到平均值。

By summing up and then dividing by the quantity, we can get the average value.