cathode ray
cathode-ray的词性:n.(名词)
1. A stream of electrons emitted by the cathode in electrical discharge tubes.阴极射线:电子发射管的阴极放出的电子流
2. One of the electrons that is emitted in a stream from a cathode-ray tube.高速电子:阴极射线管放出的电子流中的电子