Ultraudion
(三极管)反馈线路, 三极管回授式检波器, 超三极管
🗣️ 情景例句
I ran into Stone at the supermarket this morning.
早上我在超级市场碰见世通了。
He that converses not knows nothing.
不和人交谈的人一无所知。
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，