Assertion: reed's pitch | /r/CreatedBy | wind instruments
Facets:
Source sentences:
text: Therefore, the key cup can close a corresponding tone hole tightly and pitches produced by wind instruments are accurate.
text: Therefore, the key cup can close a corresponding tone hole tightly and pitches produced by wind instruments are accurate.
text: Therefore, the key cup can close a corresponding tone hole tightly and pitches produced by wind instruments are accurate.