「de forest」の発音の仕方
「de forest」の独自の発音を追加します
「de forest」の意味と定義
- Noun
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)
同義語:
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)