Photoemissive tube
[电] 光电放射管
🧩 词语组成解析
[电] 光发射
🗣️ 情景例句
Well, please sit down
嗯， 请坐下来
By other's faults, wise men correct their own.
他山之石，可以攻玉。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。