-
Well, if we look on the chart, the first ionization energy is what is reported in your Periodic Table.
如果我们查阅图表，一级电离能,已经在元素周期表上标示了。
-
if we think about electronegativity as a periodic trend we can just draw our nice periodic table here, and let's separate it into quadrants.
如果我们来思考一下电负性的周期性规律,我们可以把我们漂亮的周期表画在这，然后把它分成四个象限。
-
I thought, well, maybe we can now go to the Periodic Table and figure out what is going on there.
那么接下来，我们可以讲元素周期表了吧,让我们看一下在这儿我们又会遇到什么问题。
-
sort of takes the cyclicality out of earnings and you can see over history how that multiple has varied.
一定程度上在收益上避免了周期性的,而且你可以看到随着历史的进程,这个倍数发生了多大的变化。
-
Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.
细胞生命期可以停止在细胞周期的某个点,并保持很长时间
-
Your choice will depend on where you are in the menstrual cycle.
你的选择将取决于,月经周期时你在哪里。
-
So, remember when you're looking at your periodic table, don't forget about the lanthanides, sometimes they come into play.
因此，要记住，当你在看元素周期表时，不要忘了镧系元素，有时候也会用到它们。
-
So you should be able to look at your periodic table and see this, or also I've written the trend here.
大家应该能够通过查周期表，或者通过看我写在这里的趋势看出来。
-
You are allowed to use on the test the official version of the Periodic Table of the Elements which most of you should have by now.
在测试中你们可以使用,化学元素周期表的官方版本,你们应该大部分都有了吧。
-
So hopefully, it was a time issue in terms of looking at the periodic table, because let's have you tell me what are we looking for here?
希望刚才大家出问题的原因,是因为看周期表有时间限制，请大家告诉我,我们在这里找什么？
-
And since carbon's electronegativity is higher than that of hydrogen, which you would expect from where carbon lies on the Periodic Table. Think about it.
碳的高于氢的,你也可以从碳在，元素周期表上的位置,判断出来，试想一下。
-
So, if we look on the periodic table, comparing, for example, s to o, if we have s it's below o, what happens to ionization energy as we go down a table?
那么，如果我们看周期表上，比较，比如，硫和氧，硫在氧下面，当我们沿着表向下看的时候,电离能是怎么变化的？
-
So, then all we need to do to determine which elements that corresponds to is take a look at our periodic table.
因此，我们需要做的只剩下,在元素周期表中寻找,对应的元素有哪些。
-
And after the periodic table was developed in the late 1800's, people didn't understand this quite as well, they took things a little more literally.
在十九世纪后期元素周期表经过发展之后，人们还没有很好地意识到这一点，他们的认识还有些粗浅。
-
And I put a periodic table up there, just the part you might need to look at.
我在上面放了一张周期表，只放了可能要用到的一部分。
-
And then there is this group of about half a dozen right down the diagonal middle.
然后有一个包含六个元素的元素组,在周期表的对角线的中部。
-
That means they are found on the same place on the Periodic Table.
那就是说，它们在周期表里的,位置是一样的。
-
Donors are over here, the metals on the left end of the Periodic Table.
在这里，在元素周期表的左下部分的金属。
-
Mitosis is one event that happens during this larger event called the cell cycle.
有丝分裂就是发生在,较大的细胞周期中的一个小一点的环节
-
This is about the periodic trends that we discussed on Wednesday.
这是关于我们在周三讲过的,周期性规律的。
-
So, how many distinct, so again, we're talking about distinct kinetic energies, a spectrum for the element hafnium, 72 and I'll tell you here that it has a z of 72, so you don't have to spend two minutes searching your periodic table.
好，有多少分立的……还是一样，我们讨论的还是不同的动能，铪元素的光谱中出现，而且我来告诉大家铪的原子序数是，这样你就不用因为在元素周期表中找它,而花费两分钟的时间了。
-
It is just down the hall from this lecture theater. And you bring the Periodic Table and the Table of Constants and a calculator and something to write with.
就在这件教室下面的大厅那,你们带上元素周期表和常数表,还有一个计算器和一些写的东西。
-
The period of table's on the back page of your notes if you don't see that there.
元素周期表在你们讲义的封底,如果你没看到的话。
-
Anyway, if you go to your Periodic Table you will find that on the one side you can get what is called the enthalpy of atomization.
如果你看元素周期表,你会在这一侧发现,这是原子化焓。
-
And so here is the Periodic Table in its glory today following on Mendeleev's scheme.
所以，这是周期表,今天非常光荣地跟在门捷列夫的图表之后。
-
So it looks like not too many more than half of you got this correct, so make sure you can look at your periodic table and figure out how to think about ionization energy in terms of z effective, not just in terms of memorizing what that trend is.
看起来只有一半多一点的人,做对了，所以请大家务必做到能够通过观察周期表,并在考虑电离能时,从有效核电量的观点出发，而不是仅仅依靠记住这个规律。
-
And so you can look, for example, at the Periodic Table And, if you look up the atomic mass of carbon, 011 you will see that carbon comes at 12.011 for carbon.
如你们所见，例如，在周期表中,如果你观察碳的原子质量，你会看到是12。
-
So, one that perhaps does not reproduce in such high numbers that you create an overwhelming infection, but one that still goes through its lifecycle but is limited in its effect.
因此,一方面这些病毒不会大量复制,从而不会导致暴发性的感染,另一方面,它依旧在进行生命周期循环,只不过对其效用进行了限制
应用推荐