How to go from one reference point to the other with this property. This property, f which we're going to call f.
这两个参考点插值,得到不同温度时工作物质的特性,我们把这一特性记做。
So I need to do something intelligent to exercise my brain.
所以我得做点开动脑筋的事情让大脑也得到锻炼。
There's the water phase, there's the ice cube is the solid phase, and there's some water, gas, vapor, and that's one bar.
里面放一块冰,这是固态;,于是我们得到了水,冰和水蒸气三态共存的点。
If its in Cartesian form I'll pass in an x and y and compute what a radius and angle is.
来得到的这个点,我都可以得到这个点的,全部的这种信息。
Just take a look: if this is 9, 5 divided by 9 is always going to be 0 point something, and if you thus have two integers and you're rounding down, which is what happens when you do integral math we're using this operator, I'm going to get zero times whatever.
稍微看一看:如果这是9,5除以9会得到,0点几,如果你用两个整型数,你舍去小数,这就是当你们,用整型数使用这个操作的所发生的事情,我将得到数值0乘以任何一个数字。
You've got a little of this, a little of this, a little of this, and it makes up whatever it is that you end up with, the particular recipe for that liquid.
混一点这种威士忌,再混一点另一种,再换一种混,最终得到了混合威士忌,这种饮品有独有的配方
But the hypothesis was based on this association more or less, that looked at the rates of breast cancer across different countries and how much dietary fat those countries consumed and so you get a nice little scatter plot.
但以上假说,多少也基于一些合作研究,看看乳腺癌在不同国家,的发病率,那些国家在饮食中摄入了多少脂肪,然后就会得到一个不错的散点图
it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.
显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量
So if you haven't clicked in yet, or if you want to change your answer, keep in mind that you might need to jot down, - for example, a Lewis structure before you can answer this question.
如果你还没有点答案,或者你想改变你的答案,记住你也许需要在回答问题前写点东西,比如画一画Lewis结构,来得到最终。
Look, you're smart enough probably most of you to pull off some sort of B without breaking into a sweat, or at least not a significant sweat.
听着,你们也许足够聪明大多数人,最终不费力的得到80分,或是至少花点功夫。
And I can solve them, and if I solve them out, I'm going to get something like, let me just be careful, I'm going to get something like: 1 minus B S1* is equal to 1, or S1* equals S2* is equal to 1 over .
我们都会解这个方程,如果解完方程,我们会得到,我得仔细点别算错,我们会得到,1-BS1*=1,或S1*=S2*=1/
In that case point p 1 doesn't correspond to this point, it actually corresponds to the point of radius 2 and angle 1, which is about here.
基本上也就是说这是第一个点1,这是第二个点,把它们的值加到一起,然后我就得到了目标点,好,这听起来挺不错的。
If I want to get out right now the versions of these things, I can ask what's the value of c p 1 x, and it returns it back out.
你可以在那里看到那些,代表笛卡尔坐标点的东西,如果我想要得到现在,这个类的版本的东西的话。
self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.
我创建了,然后给它赋值,然后,噢太酷了,通过做一点额外的工作,就可以得到点的半径和角度了,好,实际上如果。
OK, now that I've got points, I might want to do something with points.
好,我现在得到了一些点,我可能想对这些点做一些操作。
And that's a wonderful thing to have because it gives you that modularity, that encapsulation that basically says, when I create a point, the only way I can get at the values, is by using one of the defined methods, in this case it could be Cartesian, Cartesian and get all the pieces of that.
这是很棒的一件事情,因为它让你有了,模块性以及封装性,这基本上也就是说,当我创建了一个点,我能够得到它的值的唯一的方式,就是用一个定义好的方法,在这个例子中也就是。
So this first little piece of code right here says, ok you give me 2 points, I'll create another 1 of these lists and I'll simply take the x, sorry I shouldn't say x, I'm going to assume it's the x, the x-values are the two points, add them together, just right there, the y-values, add them together and return that list.
好,为了来认识到这一点,让我们来看一个简单的小例子,在你们的课堂手册上,你可以看到我写了一个小程序,它假设我得到了,这些点中的一些,我想对它们做一些操作,例如我想把它们加到一起,那么这里的第一小片,代码的意思是,好给我两个点,我会再创建一个数组。
if I say a particle's location is i times t^2 plus j times 9t^3, for every value of time, you can put the numbers in and you can find the velocity by just taking derivatives.
一个质点的位置,i ? t^2 + j ? 9t^3,在每一个时间点,你可以把数值代入,并通过求导得到速度
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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