So, Lewis structures are really a model for a way to think about what the valence electron configuration is, and as I said, it's not based on quantum mechanics, it's something that Lewis observed far, far before quantum mechanics were discovered.

路易斯结构实际上是一个用来考虑价,电子排布的模型，而就像我说的，它并不以量子力学为基础，而是路易斯在以前发现的,在量子力学出现很早前。

麻省理工公开课 - 化学原理课程节选

We talked about the structure of DNA, how it works in terms of a physical chemical model of the DNA molecules.

上节课我们讲了DNA的结构,从理化模型的角度讲了,DNA分子是如何工作的

耶鲁公开课 - 生物医学工程探索课程节选

I want to start by showing you this cartoon that you already know about with the structure of a double helix.

我想要给你们看这张卡通模型,你们都知道,这是DNA双螺旋结构

耶鲁公开课 - 生物医学工程探索课程节选

The whole structure of a DNA molecule looks like this, going back to a more cartoon version like I showed you before but adding some detail onto it now.

NA分子的全部结构都和,刚才的卡通模型上差不多,但细节更为丰富

耶鲁公开课 - 生物医学工程探索课程节选

This is a feature of DNA shown in this cartoon form, so if you can keep that sort of schematic in mind, it makes it a lot easier to understand the detailed structure.

这是卡通模型所表现的DNA的特点之一,如果你能把这个模型记住,你会很容易理解DNA分子的详细结构

耶鲁公开课 - 生物医学工程探索课程节选

That's what I want to do for the first few minutes of the lecture here is tell you a little bit about the details of the structure and how molecules fit into this image of DNA that's already very familiar to you.

这是我想要,在这节课最初几分钟告诉你们的,有关DNA结构的一些细节,DNA分子结构与这个卡通模型如此一致,对你们来说很熟悉

耶鲁公开课 - 生物医学工程探索课程节选