"We have two large countries in Brazil and Nigeria who carry the weight of being a regional power,".
VOA: standard.2009.10.15
So here we have 3 minus l equals 0, because it's an s orbital, minus 1, so we have two radial nodes here.
这里我们有3减去l等于0,因为这是s轨道,减去1,我们有两个径向节点。
So we have system insulated from the outside world, and we have two bulbs.
我们有一个与环境隔绝的系统,和两个腔体。
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