它是一种用分段逼近函数近似代替连续函数，作连续傅氏变换的近似算法。

It is an approximate algorithm of continuous Fourier transform in which some approaching functions of segments are approximately used instead of continuous functions.

youdao

根据映射表具有的函数近似描述特性，提出了采用映射表实现控制器的系统结构。

According to possessing the characteristics of approximate description of function expression, the control system structure employing mapping table to implement controlling is presented sequentially.

youdao

本文基于有限解析法的基本思想，用单元内插值函数近似地代替单元内的近似解析解。

Based on the idea of finite analytic method, an interpolation function is used in place of the analytic solution, and a mathematical model is established.

youdao

So now that we can do this, we can compare and think about, we know how to consider wave functions for individual electrons in multi-electron atoms using those Hartree orbitals or the one electron wave approximations.

现在我们可以做这些了，我们可以对比和考虑，我们知道如何用哈特里轨道,或者单电子波近似去考虑,多电子原子中的单个电子波函数,所以对于我们研究了。

麻省理工公开课 - 化学原理课程节选

So, we can say that a circle is a good approximation for a 1 s wave function.

所以我们说一个圆是,对1s波函数的好的近似。

麻省理工公开课 - 化学原理课程节选