phonograph oscillator

例句：

1. 1. The phonograph was a revolutionary invention that allowed people to record and play back sound recordings.
   留声机是一种革命性的发明，它让人们能够录制和回放声音录音。
2. 2.The gramophone oscillator is the heart of the gramophone player, responsible for producing the high-quality sound that makes it such a popular music player.
   格拉莫夫振荡器是格拉莫夫播放器的核心部件，负责产生高质量的音质，使格拉莫夫成为如此受欢迎的音乐播放器。
3. 3. In the early days of radio broadcasting, phonograph oscillators were used to produce soundeffects and background noise for live broadcasts.
   在广播初期，留声机振荡器被用来为现场直播产生声音效果和背景噪音。