单词乎

secondary emission

汉语翻译

【电】 二次发射

英语解释

名词 secondary emission:

  1. the emission of electrons from a surface that is bombarded by higher energy primary electrons

例句

  1. An electrode used in certain electron tubes to provide secondary emission.
    中间极,二次发射电极一种用于一定电子管作第二次发射电极
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