R-f signal generator
[电] 射频讯号产生器
🧩 词语组成解析
signal
['sɪgnl]
n. 信号，暗号;预兆，征象;动机;导火线;
vt. 向…发信号;用动作（手势）示意;以信号告知;
vi. 发信号;
adj. 显著的，优越的;暗号的，作信号用的;
sign记号，信号+al表名词 → 信号
🗣️ 情景例句
I wasn't good at it, and I didn't like studying it.
我不精于此道， 也不爱去学它。
Oh, no! I've missed my plane.
糟糕，我错过了我订的航班。
Some children are coming out of the building.
一些孩子正从楼里出来。