The electron microscope uses a beam of electrons to produce images at high magnifications.

电子显微镜利用一束电子产生高倍放大的影像。

《柯林斯英汉双解大词典》

We have a beam of electrons.

我们有一个电子束。

youdao

TEMs work by firing a beam of electrons through the material and measuring how it absorbs and deflects the particles to build up an image of the sample.

TEMs 的工作原理是通过发射一束电子穿过某种物质，并测量它如何吸收和偏转粒子来建立样本的图像。

youdao

If de Broglie is correct, let's irradiate the nickel crystal with a beam of electrons where the wavelength of the beam of electrons is identical to the wavelength of the x-rays that were used and see what we get.

如果德·布罗意是正确的，那么镍晶体放出,电子光束,电子束的波长,和原来讲过的X光的波长是相等的,再看看得到了什么。

麻省理工公开课 - 固态化学导论课程节选

On April 8th 1982 Dr Shechtman fired a beam of electrons at a slice of aluminium-manganese alloy, in order to understand its crystal structure.

ECONOMIST: The 2011 Nobel prizes

One effect of the beam is to polarise the cloud of electrons surrounding each rubidium nucleus, meaning that part of the atom becomes a negatively charged pole, and part a positively charged pole.

ECONOMIST: Quantum computers