Here B.B.King plays Lucille on his famous recording of "The Thrill Is Gone".
VOA: special.2010.05.12
He has two electrons here with the same set of quantum numbers. B but these are two separate hydrogen atoms.
因为我写了两个量子数,一样的电子,但这是在两个不同原子中啊。
So what we'll have here is a trigonal planar case, and you can see that we only have three electrons that are set for bonding, so we'll add three hydrogens, and for b h 3, we'll get a stable structure here.
让电子劲量远离的时候,不用考虑它,这个例子是平面三角形,你可以看到,只有3个电子可以成键。
I quote in here a guy who croaks before this course starts, Jean Bodin, B-O-D-I-N.
在这儿我引用一位逝者提出的观点,金博丹
So I took this to the other side and I divided through by 2b and the b here cancels.
通过移项和通分成2b,就可以消去b了
Minus p, right? But in fact, if you go back to the van der Waal's equation of state b here's RT over v minus b.
再减去p,对吗,但是实际上,如果你代回范德瓦尔斯气体的状态方程,这里是RT除以摩尔体积减去。
Well, A has to get whatever is in B. So now I'm clobbering, as they say, this value here, and at this point in the story, this is not good.
好的,A将获得B中的数据,现在我把这个值删掉,在这个地方,这是不好的。
If you think of two towns down here, Brive,b-r-i-v-e,famous for its rugby, and Tulle,t-u-l-l-e,which is a capital.
如果你可以想起来这儿的两个城镇,布瑞福,b-r-i-v-e,以英式橄榄球运动而负有盛名,图勒,t-u-l-l-e,是一个省的首府
The next phrase, B-- is very similar, but here it takes the deviation-- And gets it back-- gets us back to the tonic.
下一乐句,B,与之前非常相似,但从这里偏离,又回来,回到主音
So what matters to me isn't just being alive, but being back here during Phase B.
所以重要的就不是活着,而是回到B阶段。
Those B-cells also mature, they differentiate and that's what's shown on this slide here is the differentiation of those immature B-cells into mature B-cells.
这些B细胞也会变成熟,并且进行分化,这都展示在幻灯片上了,未成熟的B细胞分化为成熟的B细胞
Here's another way I could do that.
如果b是偶数的话,a的b次方。
so it's important to note that it's not in b, now we're talking about b plus, because we've already taken an electron out here.
其中有一个非常重要的地方需要注意,不是硼,而是正一价硼离子,因为我们已经拿走了一个电子了。
So, let's just arbitrarily put it between these two in this case here, but actually there's no reason we couldn't also put it between oxygen b and c, so I'm going to draw another structure where we have it here.
那么,让我们任意地将它们放在这两个之间,但实际上我们没有理由,不能把它们放在氧原子,B,与,C,之间,因此我将把另外一个结构画在这里。
Let's build this up. Let's see where this comes from, where these parameters a and b comes from. So, the first thing we're going to do is we're going to take our gas in our box, let's build a box full of gases here.
参数a和b有什么含义,首先,假设研究的气体,都在一个容器里,容器里充满了气体,这些是气体分子。
So the value of 2 is here so now *b gets temp so what goes here?
那么数值2在这里,*b=temp,那么这里是什么?
What q2 makes this equal to 0 and Katie's answer is solving out the algebra here is that q2 that solves this must be a - c over b.
2为何值时这个算式等于0呢,凯特回答其实就是算出这个的解,即,q2=/b
Well, it looks like I just stole my own implementation Y but I happen to call it A and B, instead of X and Y, and so here, what's going on?
嗯,看起来我刚好像盗用了我自己的实现,我碰巧叫它为A和B,代替X和,这里,发生了什么事?
That's shown here, a B-cell gets stimulated, matures into an antibody producing factory.
这里展示的是,当一个B细胞被激活,分化成熟为一个生成抗体的工厂
b OK. In this example I'd use b. All right, as b get-- b is the thing that's changing as I go along here, but it could be things like, how many elements are there in a list if the input is a list, could be how many digits are there in a string if the input's a string, it could be the size of the integer as we go along. All right.?
好,在这个例子里我会用,因为b是一直在变的东西,但是也可能是如下情况:,如果输入是数组的话,变化的就是数组的元素数,如果输入是字符串的话,变化的就是字符串的长度,如果是integer的话,可能就是这个数的大小,对不对?
Here's heat exchanged in pathway A and in pathway B heat is zero, and in pathway C, Cv here is qC it's Cv T1 minus T2.
这是qA,这是路径A上的热量交换,路径B中的热量交换是零,而在路径C中,这是qC,它是。
Now if you're at the temperature which is b higher than the inversion temperature, in that case here, a over RT is small compared to b, and this is going to turn out to be negative.
T>Tinv】,这时a/bR小于,结果是负数,因此如果温度。
Here's a - c over 2b and here's a - c over b.
这里是/2b,这里是/b
I'm going to have 2 still, and then this S1 is going to become a 1, and this S1 here is going to become a plus B S2, everyone happy with that?
还保留,S1求导后是1,这里的S1会变成B*S2,大家都会吧
If we did the experiment where on this booster we included not only the initial antigen but some unrelated antigen, the response to the unrelated antigen called B here, looks like a primary response.
如果实验中我们使用的后续疫苗,不仅包括原抗原,还包括一些无关抗原,这里将对无关抗原的应答称为B,该应答就如同初次免疫一样
All right, so if we think about b h bond here, again, it's the sigma bond, and we're going to say it's a boron 2 s p 2 hybrid orbital interacting with a hydrogen 1 s orbital.
这可以告诉我们,为什么它倾向于周围只有6个电子,好了,考虑一下这里的BH键,同样的,它是sigma键,我们说。
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