系统工程的六个基本原子。

The six principles of systems engineering.

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本文着重介绍了两种基本原子模型的用途、研究现状及其发展趋向。

The uses, status and tendency of the two essential atomic models were presented emphatically.

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一种例外的类型是硅树脂，其链上的碳原子被硅取代作为链中的基本原子。

An exceptional type is represented by silicone resins, in which carbon is replaced by silicon as the basic atom in the chain.

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In terms of where different atoms are in a molecule, if you have a hydrogen atom or a fluorine atom, you can pretty much guarantee they're always going to be terminal atoms.

对于不同原子在分子中的位置，如果你有一个氢原子或者一个氟原子，那你基本可以保证,它们总是最末端的原子。

麻省理工公开课 - 化学原理课程节选

So, if you look in chapter one, you will find these definitions for different atomic groupings starting down here with the elements and moving through up through complex matter.

如果你们读第一章，你们会发现不同的原子组的定义,从底下开始有一些基本原理,往上还有复杂的物质。

麻省理工公开课 - 固态化学导论课程节选

For example, in terms of the atomic theory of matter, at the time at the turn of the Century, the understanding was that atoms were the most basic constituent of matter, meaning you couldn't break atoms up into anything smaller - that was it, you're done.

例如在原子理论中,在19，20世纪之交的时候,人们认为原子是,组成物质的最基本粒子,也就是说你不能,把原子再分割了,就这样了。

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