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隔声量 géshēngliàng
ecol.	volume of sound insulation
nautic., tech.	sound reduction index
shipb.	acoustic insulation mass
tech.	acoustic reduction coefficient; acoustical reduction coefficient; acoustic reduction factor; acoustical reduction factor; noise insulation factor; sound-reduction factor; sound-reduction index; sound transmission loss

隔声量: 12 phrases in 3 subjects

Hydroelectric power stations	1
Nautical	1
Technology	10