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clean gas
compr. 净化气
met. 净煤气; 洗过的煤气
oil 洁净气体
tech. 洁净煤气; 净化煤气; 纯净气体; 无尘煤气
clean gas
: 15 phrases in 6 subjects
Chemistry1
Electronics2
Environment1
Metallurgy4
Oil / petroleum3
Technology4