If you've got a problem that has units associated with it, do the exercise of carrying the units through because, guess what?

如果你做到一个跟单位有关的题目，请你在做题目的时候密切注意它，因为，猜猜是什么？

麻省理工公开课 - 固态化学导论课程节选

You can see the atomic mass unit will be, excuse me. Let me go at it a different way.

你可以看到原子质量单位就是，不好意思，我们换个方式说。

麻省理工公开课 - 固态化学导论课程节选

And now that you have patterns of bits after bits after bits, and if you chunk them up into say, eight-unit quantities, now can you start storing words and sentences, and paragraphs.

你现在按照一定模式一位一位的进行排列，如果你组成块，8位一个单位，这时候我们就可以存储字和句子以及段落。

哈佛公开课 - 计算机科学课程节选

Occasionally, you'll find you need to cancel out units, because, of course, you're always doing unit analysis as you solve your problems, and sometimes you'll need to convert joules to kilogram meters square per second squared.

偶然地，你会发现需要消除单位，因为在解题时,经常要做单位分析，所以有时候需要把,焦耳换做,一千克乘以米的平方除以秒的平方。

麻省理工公开课 - 化学原理课程节选

And it's for that whole unit that you've got some heat capacity. How much heat does it take the warm the entire thing up or the insides of the thing up by a degree? It's that number right.

由这个单位你能知道,一些热容的信息，要让这整个装置,或里面放置的东西,升温一度需要多少热量？

麻省理工公开课 - 热力学与动力学课程节选

You can pick your unit vectors, or what are called basis vectors, any way you like.

你可以任意选取单位矢量,或者也可以叫做基矢量,这都随便你

耶鲁公开课 - 基础物理课程节选

Now if you're not in a kitchen it's going to be hard to measure a cup, or an ounce, or things like that so you'll have to be estimating.

如果你不在厨房,很难用杯,盎司,或其他单位来度量,因此需要自己来估计

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So let's listen to a little bit of this music and I want you, maybe as a group to tap with your foot, your hand whatever, just the beat as you hear it.

我们一起来听一下,我希望你们也许以组为单位,一起用脚打拍,拍手,随你喜欢,一起打拍子

耶鲁公开课 - 聆听音乐课程节选

So this is a monomer or a single unit from an RNA molecule, you know that because it's ribose and it's the particular molecule that has as its organic base.

所以这是一个RNA单体,即RNA上一个单独结构单位,你通过核糖,和碱基就能够确认它是RNA,这个RNA单体的碱基为A

耶鲁公开课 - 生物医学工程探索课程节选

And so, even by units analysis, if the units come out right, you've got a good shot that unless you've really, really messed up, that the answer is going to be right.

甚至在单位分析中，如果你的单位正确，你就能做的很有条理否则会一团糟，而注意了单位你的答案才有可能正确。

麻省理工公开课 - 固态化学导论课程节选

But in terms of SI units, which become much more useful if you're actually trying to use intensity in a problem and cancel out your units, we're just talking about joules per second is what intensity is.

但是用国际单位制，这个变得越来越有用了,如果你实际上在使用强度,来解决问题和约化单位，我们仅仅讨论每秒钟的焦耳,这就是强度。

麻省理工公开课 - 化学原理课程节选

If the units are supposed to come out in meters per second and you get seconds per meter, what do you figure the chances of that problem being right are?

因为如果单位本应该是米每秒,但你写的是秒每米，你认为这个题目,还有正确的机会吗？

麻省理工公开课 - 固态化学导论课程节选

And when we talk about intensity in terms of units, we usually talk about watts, so if you change your lightbulb, usually you see the intensity in terms of watts.

当我们讨论强度的单位时，我们经常用瓦特，所以如果你更换灯泡，你通常会看到,以瓦特为单位的强度值。

麻省理工公开课 - 化学原理课程节选

And, one thing I'd like to add to it, and that is, and I told this to my recitation sections that when you do these quizzes, in spite of the fact that it might be trivial in some cases, make sure you carry the units through.

而我要在这基础上再加一条，我在我的背诵课上也讲过,当你考试时，尽管单位不重要，但我希望你能注意它们。

麻省理工公开课 - 固态化学导论课程节选

There's no reason why these two attributes had to be proportional, but they are proportional and they are equal by choice of units and you can ask, "Is this just an accident or is it part of a big picture?"

我们不知道这两个质量为何成比例,但它们确实成比例,而且如果选择合适的单位还会相等,你会问,"这种情况纯属偶然,还是这只是物理学大体系的冰山一角"

耶鲁公开课 - 基础物理课程节选

If you invented it, we'd call it whatever your name is, but this is the guy who invented it, so it's called a Newton, usually denoted by a capital N.

如果是你发明的,我们就用你的名字当单位,但这个单位是他发明的,所以叫它牛顿,一般用大写字母 N 表示

耶鲁公开课 - 基础物理课程节选

If the units come out in meters per second, you will quickly discover that the problems in 3.091 are just not that complicated.

如果你的单位是米每秒，你会很快发现,在3。091中的题目并不复杂。

麻省理工公开课 - 固态化学导论课程节选