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单词	pentode
释义	pentode /ˈpɛntəʊd / noun Electronics A thermionic valve having five electrodes.The machine incorporates a pentode vacuum-tube driven as a cathode follower in a Class-A, unity-gain output stage.... Here is a compilation of some of the finest pentode audio tubes ever made. I agree with the assumption that building large pentodes is more difficult. Origin Early 20th century: from Greek pente 'five' + hodos 'way'.
随便看	ringing floor ringing loft ringingly ringing tone ringing-up ring in one's ears (or head) ring joint ring junction ring keeper ring-key ring knocker ring kop ring laser onesteead one-step one step ahead one step forward and two steps back one-stop one-stress one-suiter one swallow does not make a summer one-tail one-tailed one-teacher school one thing after another

英语词典包含243303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。