initial approximation

基本解释

We not only take a fitting factor in the equation, but also put one in the approximation of second initial condition.
我们不仅在方程中加了一个拟合因子，而且在逼近第二个初始条件时也加了拟合因子。
It is easy to estimate these electron-optical properties of image tubes and to draw up the initial design by means of the approximation.
利用它可以方便地进行象管电子光学参量的估算与初始方案的拟定。
This first approximation model is an initial fuzzy model, so it can be introduced as a good initial structure of IT2FLS for further tuning in a subsequent process.
这个一次逼近模型是一个初始的模糊模型，可被引入作为优化调节IT2FLS参数的一个好的初始结构。

But instead in this chemistry course, I will just tell you the solutions to differential equations. And what we can do is we can start with some initial value of r, and here I write r being ten angstroms. That's a good approximation when we're talking about atoms because that's about the size of and atom.
但在这个课里，我会直接，告诉你们微分方程的解,我们可以给距离r一个初始值,我这里把r取10埃,当我们讨论原子时,这是一个很好的近似,因为原子的尺寸。
麻省理工公开课 - 化学原理课程节选