RFI broadcast an interview with the spokesman for U.N.peackeepers in eastern Congo who said army deserters were complaining about ethnic conflict and nonpayment of salaries.
VOA: standard.2009.08.12
So, if we think about the second case here where we have c n minus, now we're talking about a molecule with a net charge of negative 1.
那么,如果我们考虑的是第二个例子,也就是氰离子,那么现在我们讨论的是一个净电荷量为负一的分子。
.. I started out with the equally-weighted-- I was talking about stocks-- about n stocks that all have the same variance and are all independent of each other.
开始的时候我讲了等权重的-,我开始时讲了股票-,几支拥有相同方差的股票,彼此间相互独立。
One of the main points of contention between the Maoists and other political parties is the future of about who are currently confined in U.N.-supervised camps.
VOA: standard.2010.07.29
So another way to say that is, in a sense, if we're thinking about the excited state of a hydrogen atom, the first excited state, or the n equals 2 state, what we're saying is that it's actually bigger than the ground state, or the 1 s state of a hydrogen atom.
换句话说,如果我们激发一个氢原子,第一激发态或者说n等于2的态,我们说它比氢原子基态,或者说1s态要大。
The U.N.refugee agency reports deadly clashes between government forces and rebel groups have forced about one-quarter of a million Somalis to flee the capital, Mogadishu since May.
VOA: standard.2009.09.26
If you look at the ground state in two different systems -If you look at the ground state which is n equals one, think about this, if I increase the proton charge, the Coulombic force of attraction is greater.
如果你观察两个不同系统的基态,当你观察n,等于1的基态时,试想一下,如果我增加质子电荷,相互吸引的库仑力就会更大。
North Korea has said punitive U.N.action would bring about the collapse of the Chinese-sponsored six-party talks, in which North Korea agreed in principle two year ago to scrap its nuclear program in return for energy aid and diplomatic benefits.
VOA: standard.2009.03.25
I've got to test to see if I'm in the base case, and if I'm not, then I need to move a tower of size n minus 1, I need to move a tower of size 1, and I need to move a second-sorry about that a second tower of size n minus 1.
首先我看看我是不是在最基本的情况,如果不是的话,我得先做一个N-1个,圆盘的移动,移动一个圆盘,然后再做一次N-1个圆盘的移动。
That's why in the earlier models of the atom, they're not horrible to sometimes think about just each n value as a little ring around.
这就是为什么在早期原子模型中,人们没有感觉到把每一个,n,都想象成,一个绕核的小圆圈有什么不妥。
And when you talk about n for an orbital, it's talking about the shell that shell is kind of what you picture when you think of a classical picture of an atom where you have 1 energy level, the next one is further out, the next one's further away.
当你们谈到,某个轨道的n时,你们说的是壳层,壳层就是,你想象,一个原子,的经典图像时的场景,你有一个能级,下一个再更远的地方,再下一个又更远。
So, for example, if we're talking about the n equals 2 state, all of these four orbital descriptions are going to have the same energy.
例如,当我们说n等于2的态,所有这四个轨道的能量,都是相同的。
So this is not even thinking about the other electron shielding, just if we think of the fact, all we need to think about is that the effect of going to a further away n n as we go down the table.
到现在我们甚至还没有考虑,其它电子的屏蔽效果,即使我们要考虑这个因素,我们需要考虑也就是,沿着周期表的某一列往下走,距离会逐渐变远,将起最重要的作用,actually,dominates,这一结果所产生的影响。
So finally, if we talk about our last example of when n is going to be equal 2, l -1 and then minus 1 for m.
最后我们要讲的,这个例子,是n等于2时,等于1,we,can,have,2,,1,for,l,而m等于。
We can plug this in further when we're talking about the visible part of the light spectrum, because we know that for n final equals 2, then that would mean we plug in 2 squared here, so what we get is 1 over 4.
当我们讨论可见光谱的时候,我们可以把这个代进去,因为我们知道n末是等于2的,这意味着我们可以。
应用推荐