Some Democrats hope she will win, saying that Angle poses less of a threat to Harry Reid in November.
VOA: standard.2010.06.08
They always find a new angle, a different part to keen on especially this class. I think they are really keen on.
他们总能找全新的角度,和兴趣点,尤其是这个班级,我认为他们很有热情。
you know, make you look at things from a different angle.
这会让你从不同的视角看待事情。
Sorry, said that wrong, p1 radius 1 and angle 2, 2 radians is a little bit more than pi half.
而是半径和角度的表示,在这个例子中点,并不对应这个点,它实际上对应的是。
You can imagine that if a vector is viewed from an angle, then its components will vary with the perspective.
你可以想象一下,如果换一个角度观察矢量,其分量会相应地发生变化
And then further you put some recording device, which in those days was a photographic plate, far across a room. So you take a tiny, tiny angle and you go far enough across the room.
接着放一些记录设备,那时用的是一个摄影用的感光片,取一个极小极小的角度,然后去到房间中足够远的地方。
They want to get as far away from each other possible, the ideal angle is 120. But what we have here is a four-membered ring, so what angle does 90° that have to be, that bond? 90 degrees.
它们想要尽量远离彼此,最理想的是形成120°键角,但现在是个四元环,所以这键角应该多大?
Now take these two fingers-- the middle finger and the thumb-- and as much as possible, from that 90 degree angle, create a circle.
再让这两个手指-,中指和姆指-,尽可能保持直角时围成一个圆圈。
And modernism is all about verticality,from a certain angle.
现代主义是从固定角度来看是直立的。
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。
The angle is increasing at a steady rate, so we know it's going at a steady speed.
转过的角度以恒定速率增加,所以我们知道它以一个恒定的速度运动
Another way to represent a point in a plane is I've got a radius and I've got an angle from the x-axis, right, and that's a standard thing you might do.
平面上面的点的方法,也就是极坐标,上面那种方法其实是,如果你们喜欢我这么说的话,笛卡尔坐标表示法。
And then he just takes that narrow column of light and he admits it to a prism. And what the prism does is takes a tiny, tiny difference in wavelength and refracts it through a different angle.
他只取了那个窄光柱,然后把它对准一个棱镜,棱镜所做的就是,测量出波长的细微差别,然后从不同的角度测定它的折射度。
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。
It's now got a different radius, same angle, so I just changed the radius of it.
我刚刚改变了它的半径,噢,但是对于笛卡尔形式来说。
So, we've achieved the angle that we observed, which is a 109 . 5.
我们得到了我们观察到的角度,是109。5。
So what we're predicting is a bond angle of 90 degrees.
垂直的轨道上。
We'll adapt the convention that we'll measure angle in a radian.
我们要适应它,以后都用弧度来表示角的大小
Okay. For those who have not seen a radian, it's just another way to measure angle with the understanding that a full circle, which we used to think is 360 degrees, So a radian is roughly 60 degrees.
我想告诉那些还不懂弧度制的同学,这是衡量角度的另一种方法,理解起来是这样的,对于一个整圆,也就是我们之前所说的360°,所以1弧度大约是60°
Ok So, according to this model, 90° what we're seeing is a bond angle of 90 degrees.
我听到不同的答案,OK,,I,hear,a,mix。,根据这个模型,我们看到键角是。
And just to give you a sense, if you do a cross-cut of this, you cannot show it from this angle, but it should really be sort of a dumbbell shape with the nodal plane in between the two nuclei.
告诉你们这些就是给你们点概念,假如你们把他横切切开,不能从角度上展示,但它还是会保留几分哑铃的形态,以及在两核之间的节面。
So this is giving me now that template, better way of saying it, all right, a template now, for a point is x, y, radius, angle.
其他的方法来进行计算,但是这就是典型的我,要放置它们的地方,因此这就给了我一个模板。
I'm using the fact that when you take a cosine and change the angle inside the cosine, it doesn't care. whereas, if you go to the sine and change the angle inside the sine, it becomes minus sine.
我用了一个结论,当你使用余弦函数时,改变角度的正负,函数值不变,而对于正弦函数,改变角度的符号,则函数值也会变号
So we have if, and that is followed by, I'm going to use angle braces here just to indicates something goes in here, some test followed by a colon.
那么我写了if,后面跟着,我这里会用一个角括号,来代表这里有些东西,冒号后面跟着一些测试。
If it's in polar form I passed in a radius and angle and I'll compute what the x- and y- value is.
以及半径和角度,但是现在是这样的,不管我是以哪种形式。
So we do, in fact, have a dependence on what the angle is of the electron as we define it in the orbital.
实际上当我们定义电子在这个轨道,它的波函数的确是和角度有关的。
May hurt a little bit, but try as much as possible to create a 90 degree angle.
可能有点痛,尽可能形成一个直角。
A magnitude is how long this guy is and direction is at what angle it is.
大小是指它的长度,而方向是指它与坐标轴的夹角
This says, if you want to be in the air for a long time, so you may think that 90 degrees is the best angle.
也就是说,如果你想在空中停留更久,你也许会认为 90°是最佳选择
So, in a settling, what is the bond angle here?
这里的键角是多少?
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