So rather than calling this an electron beam, this was called a cathode ray.
因此我们最好别叫它电子束,而是阴极射线。
麻省理工公开课 - 固态化学导论课程节选
And if I evacuate it, I have a cathode ray tube.
如果我对其抽真空,我会得到一根阴极射线管。
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