Assertion: ultrasound | /r/HasProperty | sound waves
Facets:
value: with frequencies
type: OTHER
Source sentences:
text: Ultrasound are sound waves with frequencies which are higher than those audible to humans (>20,000 Hz).
text: Ultrasound is a sound wave with a frequency higher than 20kHz
text: Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.
text: Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing.
text: Ultrasound are sound waves with frequencies which are higher than those audible to humans (>20,000 Hz).