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火口 huǒkǒu
gen.	jetburner
archit.	burner
hydroel.st.	fire hole
tech.	jet burner
weld.	crater
火山口
gen.	caldron
tech.	crater
焊接火口 huǒkǒu
gen.	crater

火口: 227 phrases in 25 subjects

Agriculture	1
Architecture	2
Automobiles	1
Aviation	7
Dermatology	4
Desert science	17
Drilling	1
Earth sciences	2
Ecology	1
Electronics	2
Engineering geology	24
Exhibitions	1
General	19
Geology	3
Hydroelectric power stations	6
Metallurgy	20
Military	1
Mountaineering	1
Oil / petroleum	23
Shipbuilding	1
Soil science	1
Space	3
Technology	82
Textile industry	3
United Nations	1