Vacuum tube characteristics
[电] 真空管特性
🧩 词语组成解析
n. 特性, 特征；特质；特色（characteristic的复数）
🗣️ 情景例句
Good morning, sir. May I help you?
早安，先生。能为您服务吗？
A bargain is a bargain.
达成的协议不可撕毁。
It did not take the firefighters long to put out the fire, and they at once started to look for causes of the fire.
消防队员没花多时间就把大火扑灭了，他们马上开始调查火灾发生的原因。