It can be controlled in a variety of ways.
可以通过多种不同途径
what's the best way to study. I've got a lot of help that way.
学习的最佳途径是什么。我得到了很多帮助。
There is no way that you could irradiate a crystal of nickel with a single beam of x-rays and get that circular ring pattern if the electron beam were behaving as a particle beam only.
没有什么其他的途径,可以让镍晶体发射,单束X光来,继而得到环状图案,如果电子束,是以粒子束形式出现的。
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