For so many of us, the presidency of J.F.K.

VOA: special.2009.08.16

f So we have now temperature in degrees Kelvin.

纵坐标是。

麻省理工公开课 - 热力学与动力学课程节选

So if I print e to f of soccer, it will print the string football.

如果我要显示soccer的e到f变换的话，打印出来的就是football了。

麻省理工公开课 - 计算机科学及编程导论课程节选

printf I have my includes, standard IO's; so I can use print F, but then I had this thing called a prototype.

我包含了标准输入输出文件，所以我可以使用，然后我有这个原型。

哈佛公开课 - 计算机科学课程节选

So if we want to write out what that would be, it would just be to say that f minus is isoelectronic with neon.

那么如果我们把它写出来，它应该就是负一价的氟离子与氖原子是等电子的。

麻省理工公开课 - 化学原理课程节选

But it's just--F is just a half step away, so that's good.

也只是半音级的距离,很好

耶鲁公开课 - 聆听音乐课程节选

We now live in the internet age and so Regulation F.D.

而我们现在已经进入全新的互联网时代

耶鲁公开课 - 金融市场课程节选

And so this is the H-F bond in HF.

所以这是氟化氢中的氢氟共价键。

麻省理工公开课 - 固态化学导论课程节选

You got a plus f and a minus f, so you got to do what you got to do.

这里有一个正 f 和一个负 f,所以你知道该怎么办

耶鲁公开课 - 基础物理课程节选

So path number 1 went from i, f let's call this path up here. went to f, and this is how much energy change there was.

从i出发，经过路径1到达，能量的变化是这么多。

麻省理工公开课 - 热力学与动力学课程节选

f What about 2? d, and 3? Yup, so 3 is f.

嗯，3是。

麻省理工公开课 - 化学原理课程节选

So, we see is when we use the octet rule to look at fluorine molecule, we're combining two fluorine atoms, and what we end up with is an f f molecule where they're sharing two electrons, so making that covalent bond.

那么，我们看到把八隅体规则用到氟分子上,就是把两个氟原子组合起来，最终得到的氟分子中两个原子,共用一对电子，这就构成了共价键。

麻省理工公开课 - 化学原理课程节选

So if you know a temperature F in Fahrenheit, you can output Celsius.

如果你知道一个华氏温度的温度值，你们输出摄氏温度。

哈佛公开课 - 计算机科学课程节选

So I said that we want to be talking about valence electrons here, so that means if we're talking about, for example, the octet rule for an f f molecule where we have two fluorine atoms, we need to write the valence electrons as dots around them.

我说过我们在这要讨论的是价电子，这就意味着，如果我们要讨论，比如，关于两个氟原子组成的分子的八隅体规则,我们首先需要把价电子画成围绕在它们周围的点。

麻省理工公开课 - 化学原理课程节选

f Well, call toupper pass this lowercase F F to this function called toupper it's going to return capital F and so what do I assign to s2 bracket zero?

调用toupper函数，传递这个小写,然后返回的是大写的,那么我对s2【0】赋值多少？

哈佛公开课 - 计算机科学课程节选

Newton says F = ma, so to make it a useful result of this problem, we know the mass of this guy.

牛顿指出 F = ma,这对于解决这个问题很有用,我们知道这个物体的质量

耶鲁公开课 - 基础物理课程节选

It is. It's drawn like an array, it effectively is an array so bracket zero means go to the zero's location in that array, which happens to be F and do what with it?

它看起来像个数组，实际上也是一个数组,所以【0】就是定位到那个数组的0的存储单元，对于f发生了什么？用它做什么？

哈佛公开课 - 计算机科学课程节选

Once you got a = 2, you can go back and realize here that f = 4, so you got really 4 Newtons.

一旦你算出 a = 2,你可以回到上面来,求出 f = 4,所以实际上这个力有 4 牛

耶鲁公开课 - 基础物理课程节选

So, f c, I think you all know is formal charge.

那么，FC，我想大家都知道这是形式电荷。

麻省理工公开课 - 化学原理课程节选

And here the electrons are actually donated, so this becomes F minus.

非平均共价，到这里，电子被完全提供给F，这是氟负离子。

麻省理工公开课 - 固态化学导论课程节选

But if you avoid all of these minutia and focus really just on the idea, it looks like what was a blue say block, a so called statement, is now going to be something called printf where the F happens to stand for formatted.

但是如果你抛开所有这些繁琐的细节，把注意力集中到,它的编程思想，那么它只不过一个蓝色的say程序块，是一个声明,即所谓的printf函数，其中的f是,用于格式化输出。

哈佛公开课 - 计算机科学课程节选

It's only copying the address that was returned by get string so even though conceptually is the name this program suggests, I really just want to make a copy so that maybe I can make one version of D-A-V-I-D or F-O-O all uppercase or all lowercase or I want to spell check, something.

而只是复制GetSting返回的地址,虽然这个程序表示的名称，我只想做一个拷贝,以便我可以做一个D-A-V-I-D或者F-O-O的版本,大写的或者小写的,或者拼写检查之类的。

哈佛公开课 - 计算机科学课程节选

You can also assign to a list, or to an element of a list. So ivy sub 1, f -15 or example, could be assigned minus 15, and that will actually mutate the list.

此外你还可以给一个数组，或者数组内部的元素赋值,比如ivy。sub，可以被赋值为，这确实改变了数组。

麻省理工公开课 - 计算机科学及编程导论课程节选

So yes, f is a float, but that solution is too late; we need to fix the problem sooner.

是的，f是一个浮点数，但是那个解决方案太迟了;,我们应该在次之前把问题解决。

哈佛公开课 - 计算机科学课程节选

So input is an int called F, print out to the screen or your piece of paper the value of C. Odds are you only need two, maybe three lines of code for this, but the goal ultimately will be try it on your own.

所以输入是一个int类型的F，在你的屏幕上,或你们的纸上打印出C的数值,可能你们需要两行或者三行的代码,但是最终的目标需要你自己独自尝试。

哈佛公开课 - 计算机科学课程节选

So isn't f already a float?

所以f不是已经是个浮点数了吗？

哈佛公开课 - 计算机科学课程节选

So let's get some value right here.

它有值f，对应图中这个点；

麻省理工公开课 - 热力学与动力学课程节选

And so the slope of this thing is f at the triple point, which is this point here, this is the temperature of the triple point of water, f divided by 273.16. That's the slope of that line.

除以x轴的坐标,这就是斜率，而直线,经过原点，因此斜率乘上T就得到。

麻省理工公开课 - 热力学与动力学课程节选