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ultradźwięki m
chem.	ultrasonics
ultrasnd.	ultrasound
ultradźwięk m
el., acoust.	ultrasound
environ.	ultrasound (fale dźwiękowe o częstotliwości 20 000 Hz; Sound waves having a frequency above about 20,000 hertz)

ultradźwięki: 5 phrases in 4 subjects

Chemistry	2
Construction	1
Medical	1
Thermal Energy	1