Mahsulot tavsifi
Ushbu material shovqin va tebranishning fizik va fiziologik xususiyatlarini, ularning inson organizmiga ta'sirini, tovushning o'lchov birliklarini, shovqinni me'yorlashtirish va himoyalanish usullarini o'rganadi
#eshitish#tovush#tebranish#shovqin#gers
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