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保护焊
tech. shielded welding
CO2 保护焊
hydroel.st. CO2 shielding welding
保护焊: 274 phrases in 22 subjects
Automobiles17
Aviation10
Bridge construction1
Chemistry12
Compressors5
Construction2
Drilling1
Electric machinery8
Electronics9
General11
Hydroelectric power stations2
Metallurgy57
Nautical9
Oil / petroleum16
Pipelines1
Plastics1
Rail transport6
Shipbuilding9
Space10
Steel production4
Technology81
Wind Energy2