That represented 10% of revenues and that was the lowest level for the entire century -the entire twentieth century--10% of revenues.
占了收入的10%,这个比例是整个20世纪的最低水平,收入的10%
the speed of the money circulation of economy fell to the lowest level in fifty years.
现金流转的速度,降到了50年来的最低点。
You can see that it has reached the lowest level ever.
可见基本接近历史最低了
So, our next level up that we can go is going to be the n equals 2 energy level, but we also have an l and an m value, 0 so our lowest l is going to be a there.
所以下一个能量,是n等于2的能级,但我们还有l和m的值,所以我们最低的l等于。
It's at the level almost down to the lowest that we got in the 1990-91 recession.
它正处在这个水平上,几乎是1990-91经济衰退时最低的水平。
So if we go to the ground state, what you see is we're at that lowest energy level, and we only have one possibility for an orbital, because when n equals 1, that's all we can do.
如果我们在基态上,你可以看到,我们在能量最低的态上,只有一种,可能的轨道,因为n等于1,只有这种可能。
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