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It means that the properties of the system, the properties that describe the system, don't change in time or in space.
它的意思是指，用以描述系统的性质，不随时间或空间改变。
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Mendeleev is the one who taught us that the properties of the elements are a function of the atomic mass.
门捷列夫教授我们元素特性,是元素质量所起的功能。
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So, instead, it was amazing he was able to group things in terms of the properties that he saw.
但是，他能够仅仅通过自己知道的那些性质,就能对元素进行归类，这是非常难得的。
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Things that we can relate to the properties of the substance that we're doing the experiment on.
我们实验对象性质,有关的物理量来表示。
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They face in the opposite direction and you could predict the properties of one from base pairing rules of the other but they're not the same.
它们是反向的,尽管你能够通过一条链上的碱基序列,预测另一条链的序列,但这两条链是不同的
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They can change the properties.
他们可以改变物质的属性。
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The sort of thing that perhaps we might call or think of as abstract objects or abstract properties.
这类事物,我们可能需要称作或认为是抽象的现实,或抽象的性质
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So it's which of these partials are sounding within each of these instruments, and the physical properties of each of these instruments are different.
所以是因为每种乐器发出的泛音不同,每种乐器的物理性质,都是不同的
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If food has addictive properties, and we'll discuss this in the class, then is this the sort of thing that should get regulated by government?
如果食品具有成瘾性,我们会在这门课里讨论,关于这类食品,是否也应该受到政府管制呢
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Martha Nussbaum The philosopher and legal scholar Martha Nussbaum nicely summarizes this: "Thus, throughout history certain disgust properties have repeatedly and monotonously been associated with Jews, women, homosexuals, untouchables, lower class people.
哲学家和法律学者,很好地总结了这一点：,”因此，历史上某些令人反感的属性,便一次又一次地被套在,犹太人，女人，同性恋者，贱民，低阶层者的身上。
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Since we're talking about wave functions, since we're talking about the properties of waves, we don't only have constructive interference, we can also imagine a case where we would have destructive interference.
因为我们讨论的是波函数，因为我们讨论的是波的性质，我们不仅有相长干涉，我们也可以想象在,某种情况下会有相消干涉。
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And the reason we didn't do that is because we're actually going to spend much of the rest of the course relating these different properties to the properties of molecules in terms of bonding, and also in terms of chemical reactions.
我们至今没有这样做的原因是,实际上我们这门课程以后的大部分时间都将花在,如何将这些性质与分子的性质联系起来,在成键以及化学反应的方面。
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If you change the composition, you change the properties. But this is different.
如果你改变组成成分，你就能改变属性，但是这是不同的。
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The properties are not only a function of composition.
属性不只是组成成分的功能。
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But, anyway, let's talk about the properties.
但是，不管怎样，我们谈谈它的特性。
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One of the properties that you would like a plasmid to have is you'd like for cells to be able to replicate it, to make more copies of it.
所以你所希望质粒具备的一个属性,就是得能让细胞复制它,制造出更多的拷贝
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What are the properties of this restriction enzymes?
这种限制性内切酶的特性是什么
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So really what I want to point out here is as we get more into describing quantum mechanics these quantum dots are one really good example where a lot of the properties of quantum mechanics apply directly. So, if you're interested, I put the Bawendi lab research website onto your notes.
我真正想说的是，随着,我们学习量子力学的深入,这些量子点是很多量子,力学性质得到直接应用的很好例子,如果你们感兴趣的话，我把Bawendi实验室的,网站放到你们的讲义里去。
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You have extensive properties and intensive properties The extensive properties are the ones that scale with the size of the system.
广延量,和强度量,广延量的值,随着系统的规模变化。
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So, these on-changing properties that describe the state of the equilibrium state of the system are called state variables.
这些描述,系统平衡态的,变化的属性,就叫做状态变量。
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And these rings are indicative of the crystal structure of nickel and can be explained only by invoking wavelike properties of light.
这些光圈,表明了了镍的晶体结构,而且只能通过,光线中波的特征来解释。
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So the temperature is intensive, and you can make intensive properties out of the extensive properties by dividing by the numberof moles in the system.
所以温度是强度量，你可以通过,除以系统中物质的摩尔数,来从广延量中导出强度量。
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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。
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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。
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It turns out that when you're talking about macroscopic properties of matter, you don't need very many variables to describe the system completely thermodynamically.
实际上,当你谈及物质的宏观性质时，你并不需要很多变量才能从热力学上,完整地描述这个系统，’
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Intensive properties don't care about the scale of your system.
强度量与系统的规模,没有关系。
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And once he did that, both he and many other scientists, could then, once they understood what caused the fluorescence, make little changes to the actual protein, and tune what the properties of that fluorescent protein were.
而且一旦他做成了这个，一旦他们弄清楚了是什么导致萤光，他和其它很多科学家，就可以对蛋白质做微小的改变，调节蛋白质的荧光性质。
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