external-line triode oscillator

例句：

1. 1. The external-line triode oscillator was used to generate a stable signal for the communication system.
   外部线路三极管振荡器用于为通信系统生成稳定的信号。
2. 2. The external-line triode oscillator was responsible for providing the necessary frequency and amplitude for the audio signals.
   外部线路三极管振荡器负责提供音频信号所需的必要频率和振幅。
3. 3. The external-line triode oscillator was designed to be highly reliable and durable, ensuring that the system could operate smoothly even in harsh environmental conditions.
   外部线路三极管振荡器被设计得非常可靠和耐用，以确保系统能够在恶劣的环境中平稳运行。