語言選擇:
免費網上英漢字典|3Dict

Lee De Forest

資料來源 : WordNet®

Lee De Forest
     n : United States electrical engineer who in 1907 patented the
         first triode vacuum tube, which made it possible to
         detect and amplify radio waves (1873-1961) [syn: {De
         Forest}, {The Father of Radio}]
依字母排序 : A B C D E F G H I J K L M N O P Q R S T U V W X Y Z