Photocathode
n. 光电阴极
🗣️ 情景例句
Who's that?
谁呀？
Old acquaintance will soon be remembered.
故人一见便相亲。
There was nothing in the record to show that the foreigner's complaint was justified and the Chief of Police strongly denied the accusation.
材料中没有任何文字记载证明外国人所说的情况符合事实，警察局长矢口否认这一指控。