Vco
abbr. variable crystal oscillator 可调晶体振荡器; voltage-controlled oscillator 电压控制的振荡器
🗣️ 情景例句
and how hard it is
他还说这件事很难
If you run after two heares, you will catch neither.
两头落空。
In so far as any inquiry is a secret one,
任何一项研究都涉及到保密，