pitch scale

例句：

1. 1. The musician tuned his guitar to the correct pitch scale.
   这位音乐家调整了他的吉他，使其音调符合正确的音阶。
2. 2. The singer's voice has a wide pitch scale and can range from low notes to high notes.
   这位歌手的嗓音音域宽广，可以从低音到高音。
3. 3. The orchestra performs with precision, adhering to the same pitch scale throughout the performance.
   管弦乐队在演出中保持精准，始终遵循相同的音阶。