And the result is a diffraction pattern that produces a series of rings.

得到的衍射图案是,一系列光圈。

麻省理工公开课 - 固态化学导论课程节选

And at first this was done by Davidson and Germer, and they were American scientists who tried diffracting electrons from a nickel crystal.

这个实验首先是由，美国科学家Davidson和Germer完成的,他们尝试从镍晶体中衍射电子。

麻省理工公开课 - 化学原理课程节选

But for now let's simply say that we have a diffraction which we know occurs only by wave-like behavior and it involves the use of x-rays. Why x-rays?

但现在让我们来简单假设一下,我们知道,只波才发生衍射,而且衍射涉及了X光的使用，为什么是X光？

麻省理工公开课 - 固态化学导论课程节选

And there is a technique known as x-ray diffraction.

而且有种X光衍射的技术。

麻省理工公开课 - 固态化学导论课程节选