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开焊 kāihàn
dril. sealing-off
el. open weld; unsolder; unsolder-ing
space tip-off
开〔拆,脱,解〕焊
gen. tip-off
开 焊
: 55 phrases in 10 subjects
Architecture1
Automobiles2
Chemistry1
General4
Hydroelectric power stations1
Metallurgy15
Nautical2
Oil / petroleum2
Plastics4
Technology23