I can see footprints of my boots in the small,fine particles.

VOA: special.2009.07.15

So this project was, let's see if we can detect any alpha particles by making a detector that swings around.

当你是本科生的时候，你们的导师会派一些,你们看上去很傻的工作,给你们干，现在这个工作就是。

麻省理工公开课 - 化学原理课程节选

And when you actually wanna store information on disk, can you actually use, as we'll see in a moment, magnetic particles.

当你想在硬盘中存储信息时，我们将会用到后面，我们会谈论的一种称之为磁性粒子来实现它。

哈佛公开课 - 计算机科学课程节选

First is that we have this mono layer of gold particles. So let's see if Professor Drennen is able to help us out here.

是如何做的,我们等会儿会自己做这个实验,我会问你们一些问题。

麻省理工公开课 - 化学原理课程节选

We know we need to divide by 266, 266 but what we need you to help us with is to figure out this top number here and see how many particles are going to backscatter. So if the TAs can come up and quickly hand out 1 particle to everyone.

知道背散射的概率就可以了，我们知道要除以,但还需要你们来搞清楚,分子上的数是多少，有多少个发生背散射的粒子,助教们请过来,把这些球分给同学们。

麻省理工公开课 - 化学原理课程节选