We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.

我们有一个元素表，其中的元素的特性,随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简,将它变成一个周期表。

麻省理工公开课 - 固态化学导论课程节选

It varies in its structure among cells of the nervous system but all synapses have some properties in common.

突触结构因神经系统细胞不同而不同,但突触都有某些共同属性

耶鲁公开课 - 生物医学工程探索课程节选

And what we've been talking about with all of these properties are, of course, how can we figure out what that is for a certain atom by looking at the periodic table, so we want to think about the periodic trend for atomic radius.

对于我们讲过的这些性质，我们所讨论的一直都是,当然是，我们如何能够判断某一个原子的这些性质,通过观察周期表，因此我们需要思考一下原子半径的周期性规律。

麻省理工公开课 - 化学原理课程节选

OK, any questions? All right, so we've described the system with these properties.

好，有没有问题？，好的，我们已经用这些性质描述了系统,这些性质。

麻省理工公开课 - 热力学与动力学课程节选

All right, so that was a quick aside on thinking about how these properties can, in fact, relate to something in our body.

好的，我们刚才小小地离题了一下,来想了想我们讲过的性质，在实际上，是如何跟我们身体的某些机能联系起来的。

麻省理工公开课 - 化学原理课程节选

If you can genetically engineer viruses like this and viruses have all those good properties as gene therapy vehicles that I described.

如果你能像我说的这样在遗传上改造病毒,加之病毒具备诸多优点,适合作为基因治疗的载体

耶鲁公开课 - 生物医学工程探索课程节选

And there will be a little bit of history in there, but this is mostly modern chemistry and represents the basic properties of matter, and it's basic properties of all matter, including living matter, which was what really interested me, that connection between chemistry and biology.

它们都有一些历史，但都是最现代的化学,代表了物质的最基本的性质，而且是所有物质的最基本性质，包括生物，这个让我很感兴趣，因为它连接着化学和生物学。

麻省理工公开课 - 化学原理课程节选