(1890–1954), American electrical engineer, inventor of the superheterodyne radio receiver and the frequency modulation (FM) system.
(1890–1954), US electrical engineer, inventor of the superheterodyne radio receiver and the frequency modulation (FM) system.
英汉双解词典包含464360条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。