F-f cavity preselector
[电] 射频空腔预选器
🧩 词语组成解析
[计] 预选器, 预选程序
🗣️ 情景例句
Uh, we're home now, Ellen.
噢 ，我们现在到家了， Ellen。
I ate beef noodles for lunch yesterday.
我昨天午饭吃的是牛肉面。
Just as Mrs.Richards was entering the dinning room, there was a knock on the front door.
理查兹夫人刚刚走进餐厅，前门就传来敲门声。