英语词汇“light pen”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	light pen
释义	Word Frequency light pen noun computing a. a rodlike device which, when applied to the screen of a cathode-ray tube, can detect the time of passage of the illuminated spot across that point thus enabling a computer to determine the position on the screen being pointed at b. a penlike device, used to read bar codes, that emits light and determines the intensity of that light as reflected from a small area of an adjacent surface
随便看	Euphrosyne euphuise euphuism euphuist euphuistic euphuistical euphuistically euphuize euplastic euplastics euploid euploidy eupnea eupneic eupnoea eupnoeic eur- eur- Eurasia Eurasian Euratom Eure Eure-et-Loir eureka eureka moment

英语词典包含233703条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。