Phrase
electron beams
电子束
electron beams is the plural of electron beam.
a stream of electrons emitted from a cathode or produced by ionization
常用于电子显微镜、电子束焊接等
- 1.
Synonym of cathode ray.
阴极射线的同义词
阴极射线的同义词；[医] 电子柱
In use
In an electron microscope, an electron beam is used to magnify tiny structures.
The electron beam can be precisely controlled to etch patterns on a silicon wafer.
Researchers focused the electron beam onto the sample to analyze its composition.
generate/focus/use + an electron beam
electron beam前常用不定冠词an。
The microscope generates a focused electron beam.
显微镜产生聚焦的电子束。
electron beam + is used to + verb
An electron beam is used to weld metal parts.
电子束用于焊接金属零件。
verb + with + an electron beam
表示使用工具时用with。
The sample is scanned with an electron beam.
样品用电子束扫描。
Common mistakes
Electron beam is used in electron microscopes.An electron beam is used in electron microscopes.
“electron beam”是可数名词短语，在单数形式前需要加不定冠词“an”。
The microscope uses an electrical beam to scan the sample.The microscope uses an electron beam to scan the sample.
在科技英语中，固定术语是“electron beam”，而不是“electrical beam”。“electron”作为名词修饰“beam”，表示由电子组成的束流。
Connections
Confusing words
- electron microscope
- 电子显微镜 · electron beam 指电子束本身，而 electron microscope 是利用电子束成像的设备。
Word family
- electron beams
- plural
Learner notes
Grammar Note
可数名词
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.