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asphalt mattress
archit. 沥青毡
bridg.constr. 沥青毡油毛毡
hydroel.st. 沥青垫层
tech. 石油沥青垫层; 地沥青毡
water.res. 沥青蓐垫
asphalt mattress: 8 phrases in 3 subjects
Hydroelectric power stations2
Technology4
Water resources2