Assertion: bass trombone | /r/HasAspect | one f rotor
Facets:
value: with slower bell taper
type: OTHER
value: with a larger bore
type: OTHER
Source sentences:
text: Single rotor bass Trombones have one ‘F rotor’ like a Bb/F Tenor Trombone, but with a larger bore, slower bell taper and wider bell diameter for a more powerful broader tone.