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单词	permatron
释义	permatron noun per·​ma·​tron ˈpərmə‧ˌträn plural -s : a vacuum tube in which the electron flow is controlled by a magnetic field Word History Etymology permanent + -tron
随便看	jiujutsus jiulios Jiulong jiva jivanmukta jivanmukti Jivaran Jivaro jivaroan jivaros jive jived jivers jives jivey jivier jiviest jiving jizya jizyah jizzes jl JMA JMJ JMT

英语词典包含469781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。