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防音 fángyīn
agric. sound isolation; soundproofing
防音: 38 phrases in 19 subjects
Agriculture3
Automobiles1
Aviation4
Bridge construction1
China1
Ecology1
Economy2
Electronics4
General1
Information technology1
Metallurgy1
Oil / petroleum2
Radio1
Rail transport1
Space3
Technology6
Telecommunications3
Textile industry1
United Nations1