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soundproofing ['saund'pru:fɪŋ] n
environ.	"äänen eristys, ääneneristys"
soundproofing Reducing or eliminating reverberation in a room by placing sound-absorbing materials on the walls and ceiling v
environ.	äänen eristys; ääneneristys

soundproofing: 1 phrase in 1 subject

Mechanic engineering

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