인간의 가청 범위를 넘어서는 주파수를 가진 초음파의
Relating to or using sound waves that have a frequency above the upper limit of human hearing.
예문:
"The medical team performed an ultrasonic scan to check for internal injuries."
"Some pest control devices emit ultrasonic sounds to repel rodents."
"Ultrasonic welding is a common technique used in the automotive industry."
인간의 귀로 들을 수 없는 높은 주파수의 음파
A sound wave with a frequency higher than the human ear can detect.
예문:
"The study of ultrasonics involves frequencies ranging from 20 kHz to several gigahertz."
"Industrial ultrasonics are used for cleaning precision parts in manufacturing."