What we've learned so far is as a first approximation, what we want to do is put the atom with the lowest ionization energy in the middle here.

我们之前所学的可以作为第一近似，我们要做的是把电离能，最低的原子放在中间。

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In the first we introduce basic notions of scheduling problems, competitive analysis and approximation algorithm, summarize semi online models and their results which appear in recent years.

本文首先简要介绍了排序问题、竞争比分析和近似算法等基本概念，总结了近年来出现的各个半在线模型及其有关结果。

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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。

youdao

What we've learned so far is as a first approximation, what we want to do is put the atom with the lowest ionization energy in the middle here.

我们之前所学的可以作为第一近似，我们要做的是把电离能,最低的原子放在中间。

麻省理工公开课 - 化学原理课程节选

It's always a good first approximation, because you need to start somewhere in terms of drawing Lewis structures, but then if you go and figure out the formal charge and you just have lots of charge separation or very high charges, like a plus 2 and a minus 2 and a minus 1 all different places in the atom, what it should tell you is maybe there's a better structure.

它总是一个好的第一近似，因为在画路易斯结构的时候,你总需要一个起点，但是如果你在算出形式电荷之后,发现有很多电荷分开了,或者说有很高的电荷，比如有一个正二，一个负二，还有一个负一1,在原子的各个地方，这应该就是在告诉你,或许还有一个更好的路易斯结构。

麻省理工公开课 - 化学原理课程节选