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底焊
dril. root pass; root run
met. back running
plast. backing bead
tech. backing weld (缝); back welding; welding on bottom; weld on bottom
wind. backing weld
底焊焊缝
construct. backing weld
底 焊
: 85 phrases in 17 subjects
Architecture1
Automobiles4
Chemistry5
Construction2
Drilling3
Electric machinery1
Electronics4
General1
Metallurgy13
Nautical1
Oil / petroleum7
Plastics7
Rail transport3
Shipbuilding1
Technology29
Transport1
Wind Energy2