Photocathode
n. 光电阴极
🗣️ 情景例句
Mr. Carlson will love them.
Carlson先生会喜欢的。
I can't express myself very well in English.
我不能很好地用英语表达自己。
the graphic record shows three waves arriving one after the other at short intervals.
曲线纪录就能显示出前后相间的这3种地震波。