external sine-wave oscillator

例句：

1. 1. The device isdesigned to generate a stable signal with an external sine wave oscillator.
   该装置设计用于使用外部正弦波振荡器生成稳定信号。
2. 2.The external sine wave oscillator was used to measure the distance between two points on the map.
   外部正弦波振荡器被用来测量地图上两点之间的距离。
3. 3.The engineer used an external sine wave oscillator to create a smoother sound effect.
   工程师使用外部正弦波振荡器来创造更平滑的声音效果。