Photoemissive tube
[电] 光电放射管
🧩 词语组成解析
[电] 光发射
🗣️ 情景例句
Who's running against him?
谁与他竞选
I've been looking forward to visiting your factory.
我一直都盼望着参观贵厂。
Oh, it's a short ruler. Who has a long one?
噢，这是把短尺。谁有长尺？