Iranian authorities pulled the plug on a popular Iran-based website for Moussavi supporters and blocked text messages.
VOA: standard.2009.06.14
I don't know if you know how a spark plug works, but for the electrical current to fly into operation in a spark plug, the two points of contact have to be gapped.
我不知道你们是否知道,火花塞是怎样工作的,在电流通入火花塞中使它运转之前,两个接触点之间需要有空隙。
So I've got this expression for prices here, here it is, and I want to plug it into that P there.
我们之前已经给出了价格的表达式,用它来代换这里的P
z So the main idea here is z effective is not z, so don't try to plug one in for the other, they're absolutely different quantities in any case when we're not talking about a 1 electron atom.
所以这里主要的观点是有效的z不同于,所以不要尝试将一个插入到另一个,当我们不在讨论1个电子的原子时,它们在任何情况下是绝对不同的量子数。
Then for any time t, you plug in the time t and you will get the location.
那么在任何时刻 t,当你代入 t 的值,就可以确定位移
Now, if we plug in the numbers, we plug in the numbers for HF.
如果加上这个数字,对于HF,我们加上这个数。
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。
And it turns out that if we have a, for example, for s, a very large z effective or larger z effective than for 2 p, and we plug in a large value here in the numerator, that means we're going to end up with a very large negative number.
结果是如果我们有一个,举例来说对于s一个很大的有效电荷量或者,比2p大的有效电荷量,并且我们将一个较大的值代入计算器,那意味着我们最后会得到,一个非常大的负数。
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