power-amplifier tube

例句：

1. 1. Thepower amplifier tube is the heartof our audio system.
   功率放大器管是我们音频系统的核心。
2. 2. The engineer carefully selected thebest power amplifier tube for theproject.
   工程师仔细挑选了最适合该项目的功率放大器管。
3. 3. The new model of poweramplifier tube has significantly improved soundquality.
   新型功率放大器管在音质上有了显著提升。