对人类种群起源和分布的研究曾是基于考古和化石证据。

Study of the origins and distribution of human populations used to be based on archaeological and fossil evidence.

youdao

这意味着研究人员可能会决定只观察在每20分钟内随机分布的15秒间隔。

That means the researcher might decide to observe only during 15 second intervals that are randomly distributed within each 20 minute period.

youdao

他们现在已经离开了最后那些零星分布的郊区了。

They were beyond the last straggling suburbs now.

《柯林斯英汉双解大词典》

So, let's go ahead and think about drawing what that would look like in terms of the radial probability distribution.

让我们来想一想如果把它的,径向概率分布画出来是怎么样的。

麻省理工公开课 - 化学原理课程节选

Not on the basis of simple filling in ascending order, but a modified rate of filling as according to the Aufbau Principle.

并不是以简单的升值分布为基础，而是一个修改的填充方法,根据构造原理得到的填充法。

麻省理工公开课 - 固态化学导论课程节选

So I mentioned you should be able to identify both how many nodes you have and what a graph might look like of different radial probability distributions.

我说过你们要能够辨认,不同的径向概率分布有多少个节点,以及它的图画出来,大概是什么样的。

麻省理工公开课 - 化学原理课程节选