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shielded arc
met. 屏蔽电弧; 覆罩电弧
shielded arc: 106 phrases in 17 subjects
Automobiles5
Aviation4
Chemistry3
Compressors1
Construction1
Drilling1
Electric machinery4
Electronics3
General3
Hydroelectric power stations2
Metallurgy20
Nautical2
Oil / petroleum10
Rail transport6
Shipbuilding6
Space6
Technology29