They're pretty straight forward to do and it gives us an idea what kind of nodal structure we can expect it an orbital.
这个对我们来说很明显,而且让我们对,预计是哪类节点有个概念。
How many pi bonds would you expe PROFESSOR: Two, great.
你们预计它有几个π键,两个,很好。
What they mean by that is, if you're a builder and you have this place where you show off your model homes, how many people are coming by to look at your model homes today as potential buyers?
意思就是,如果你是建造商,你有地方展示样板房,预计今天会有多少潜在顾客,来看样板房
Now this was nineteen-eighty-two, quite a long time ago, at a time when people really weren't paying much attention to calories like they are now, so you'd expect the errors to decline as time goes on and there's some evidence of that, but they're errors nonetheless.
这是1982年的实验,很早之前了,当时的人们并不像今天的人们一样,那么关注卡路里,所以你会预计误差会随时间推移而减小,有证据证明了这一点,但误差仍然存在
So presumably, these two cells have exactly the same DNA content, but something's been passed onto this one that wasn't there.
按照预计,这两个子细胞应该有完全相同的DNA,但某种成分传给了一个细胞而不是另一个
As much as we know about tobacco in the United States and the fact that there are only half the number of people smoking than used to be the case, it's still expected to rise by 45% worldwide By 2030 the deaths attributed to smoking will increase from four to ten million.
就我所知美国的烟民情况,在美国吸烟的人数,只有过去的一半,在世界范围内仍有预计45%的增长,到2030年,死于吸烟的人数,将由四百万增长至一亿
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