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gas seal
cast.iron. 煤气封盖
earth.sc. 气密〔封〕
el.mach. 气密
met. 气封; 【铁】 煤气封盖 (大料斗上面的)
tech. 气密 (层)
textile 惰性气保护
gas seal: 33 phrases in 8 subjects
Compressors2
Construction1
Electric machinery2
Electronics16
Metallurgy4
Rail transport1
Space2
Technology5