Doctors can collect it with a needle. But people who donate marrow must first have tests to make sure they are a good match for the patient.
VOA: special.2009.12.16
Here we're talking about a hydrogen atom and that's what we'll focus on today. And it's incredibly precise and we're able to make the predictions and match them with experiment.
是一个氢原子,我们今天都主要讨论它,它非常准确,我们可以做出,预测与实验比较,此外。
It's like telling your horoscope; if you're general enough, you're going to make a match.
这就像识别你的星座,如果你的特点足够宽泛,一定能够找到和星座的一个匹配点。
All right, so I did this not at all purposely, but this can point out for you that you need to make sure that the number of electrons that you have in your molecular orbital does match up with the total number that you have in your atomic orbitals.
我并不是故意这么做的,但这告诉我们必须要保证,分子轨道里的电子数,和原子轨道里的,总电子数能对上。
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