ultrasonic
/ˌʌltrəˈsɒnɪk/ (bre, ipa) · [ˌʌltrəsˈɑnɪk] /ˌʌltrəˈsɑːnɪk/ (ame, ipa) · [ˌʌltrəsˈɑnɪk] /ˌəl-trə-ˈsä-nik How to pronounce ultrasonic (audio)/ (ame, mw)
ultrasonic — adjective
- ultrasonicpositive
- more ultrasoniccomparative
- most ultrasonicsuperlative
1. connected with sound waves whose frequency lies beyond the range human ears can
connected with sound waves whose frequency lies beyond the range human ears can detect.
Mizuki adjusted the ultrasonic cleaner to remove dirt from the tiny silver parts.
collocation: ultrasonic cleaner
Doctors used an ultrasonic scan to check the baby's heartbeat during the visit.
collocation: ultrasonic scan
The museum installed ultrasonic sensors that detect movement after the doors close.
Rania could not hear the ultrasonic alarm, but the dog reacted at once.
Engineers tested whether ultrasonic waves could reveal cracks inside the bridge.
- high-frequency
broader technical term; not every high-frequency sound is above the human hearing limit
- inaudible
describes the effect on listeners, not the sound wave's scientific range
- audible
able to be heard by people, so within the human hearing range
文法句型
ultrasonic + noun
用法筆記
Usually appears before a noun, especially in technical terms such as ultrasonic cleaner, ultrasonic scan, and ultrasonic sensor. Distinguish it from supersonic, which describes speed faster than sound rather than frequency above human hearing.