orthicon

英[\'?:θ?k?n]
美[\'?θ??k?n]

基本釋義

n.
正析，（攝）像管

英英釋義

Noun

  • 1. a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons

最新英語單詞

行業(yè)英語