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So, let's take a look at the different kinetic energies that would be observed in a spectrum for neon where we had this incident energy here.
那么，让我们来看一下,在已知入射能量的情况下,可以在氖光谱中观测到哪些不同的动能。
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In fact, of all the systems of cellular differentiation that are known in our bodies, probably hematopoiesis is the best known.
事实上,我们体内已知的,所有由细胞分化成的系统中,造血系统也许是最为人所熟知的
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He seems to have known something about the modern economic theory of society long before modern economics was even developed.
而且是公开的驳斥,他似乎已知现代社会的经济原理,且是在现代经济学开始发展之前。
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Those are the familiar and empirical objects that we can see, pieces of paper, bodies, pieces of chalk, bars of metal.
那就是我们能看见的,熟悉的已知的物体，纸，身体，粉笔，金属棒。
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I'm trying to write these two unknowns in terms of these two knowns and you can solve for them.
我会试着将这两个未知量,用这两个已知量表示出来 这样你们就可以求了
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So we know this is going to be a straight line in between, so let's put this line in.
我们已知两者之间是线性关系的,所以我们用直线连接两点
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And in these experiments we not only need to learn what has been learnt, but also have to learn what it is that we don't know.
在这些试验里我们不仅,要知道已知的知识，还要知道,我们不知道的内容。
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So, if we do this calculation for an electron, saying it moves at 10 to the 5 meters per second, then what we end up with for a wavelength is 7 times 10 to the -9 meters.
如果我们已知电子以，10的5次方每秒的速度运动，那么做一个计算,可以得知它的波长是,7乘以10的负9次方米。
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So first, let's start with the one that we already know, and make sure that it still works, starting from here, mainly our isolated system.
首先，我们从我们已知的一个例子入手，看看这个判据是否正确，从绝热系统出发。
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So, there were seven known metals at the time, and seven heavenly bodies.
所以，当时有7种已知的金属，还有7个天体。
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That's another conventional formula that goes from interest rate to price of the security.
这是另一条已知利率,求证券价格的经验公式
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I suppose the first apparently historical event that we know something about is the first Olympic Games, which according to Greek tradition were held in 776 B.C.
我认为第一个已知的重大历史事件,就是第一次奥林匹克运动会,根据希腊人的口头传述,那是发生在公元前七百七十六年
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Constant reminder of what you already know, of what is inside you.
经常提醒你们记起你们已知的东西，你们内心深处的东西。
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Consider the following: every society which we know operates within the medium of belief or faith of some kind.
考虑下例所提：每一个社会,已知的社会，运作的媒介,多少都含有一些信念或信仰。
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One of the things about these plasmids that makes them very useful is that their entire base pair sequences is known.
质粒之所以有用,其中一个原因就是,它的全部碱基序列都是已知的
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Conversely, if I knew the velocity of this object, I also know what time it is, provided I knew the initial velocity.
反过来,如果我知道了这个物体的速度,我也同样可以知道时间,只要初速度是已知的
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Now I can measure that, because I pull it by one centimeter and I find the acceleration it exerts on a known mass.
现在就能测量这个力了,因为把弹簧拉伸 1 厘米,我就知道它让一个质量已知的物体产生的加速度
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So the state of nature is not necessarily a condition of actual fighting, " but what he calls a "known disposition to fight."
所以“自然状态“并不必须是,实际斗争的情况，而是他说的，“已知的斗争倾向“
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It turns out there's actually no natural function known in the body for lithium.
事实上我们已知的身体机能,在正常情况下根本不需要锂。
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You can only do this because it's reversible. What else do I know?
这一步,只对可逆过程成立，还有什么已知条件？
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By the time of the American Revolution these are the elements that were known.
到了美国革命的时候,这些元素都已知了。
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Let's wonder what the firm profit is given by.
假设这个企业的利润是已知的
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Let's write everything that we know down.
我们的所有已知条件。
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We're going to assume that these are known.
我们假设这些都是已知的
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And it turned out that another, not quite as deadly, but still very serious disease called syphilis was also common in this part of the world at that time.
现在已知另外一种疾病,它并不完全致命但也很严重,它叫梅毒,在那时的一些地方也很常见
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Given that we're going to die, this fact seeps back in and poisons the nature of life or perhaps poisons the nature of the whole, life followed by death, so that on balance the whole thing's negative.
已知我们会死，这个事实渗透到并使毒害生命的本质,或者也许毒害所有事的本质，生后即是死，所以总的来说，所有的事都是消极的。
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They take those descriptions and the scientist that is known and they try to design new things, and so if you look at a dictionary it has words like this, that you're designing things or another way to say that is that you're trying to apply science, you're looking at applications.
他们利用已知的,科学原理和描述,来设计新东西,因此,如果你查字典时看到这样的词条,设计产品或者换句话说,试图应用科学原理,那么你看的这个词就是应用
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Everyone knows from calculus that if you're trying to find a function about which you know only the derivative, you can always add a constant to one person's answer without changing anything.
学过微积分的人都知道,如果你想根据已知的导数,求出其原函数,你总是可以给某人的答案,随便加一个常数,且不影响结果
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That's how by either balancing the unknown force with a known force or by simply measuring the acceleration as I fall towards this podium and multiplying by mass, you can find the force that exerts on me.
我们既可以让未知力与已知力平衡,也可以只测量我冲向讲台时加速度的大小,再与我的质量相乘,都能求出作用在我身上的力的大小
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Do you realize that this is a pair of simultaneous equations in which you can solve for these two unknowns, if you like, in terms of these two knowns and these coefficients, which are like these numbers, 3, 2, 4, and 6?
你们是否发现这其实就是一个方程组,你可以用它来解出这两个未知量,你愿意的话,可以用这两个已知量,和这些系数,比如这些数字,3,2,4和6
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