| 释义 |
Lee De Forest短语¹⁴⁴⁹⁷²⁺²
基本英英例句
🌏德福雷斯特；李·佛勒斯特
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 Sound films became possible through the developments pioneered by Lee De Forest, who exhibited brief sound films to the public in1923.
福雷于1923年为公众放映了简短的有声片，由他引起的一系列发明使有声片最终成为现实。 tdict
The triode, invented by Lee De Forest in the early part of the last century, was the first electrical amplifier.
在上一世纪初期的早些时候发明，是第一个电气放大器。 com |