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坑口 kēngkǒu
eng.geol.	mouth; pit head
hydroel.st.	bankhead
met.	bank head
tech.	mine mouth
坑〔洞〕口
gen.	mouth
坑〔井〕口
gen.	bank-head
坑〔矿〕口
life.sc.	pit head

坑口: 50 phrases in 13 subjects

Architecture	1
Construction	1
Electric machinery	2
Electronics	2
Engineering geology	2
General	3
Geology	1
Hydroelectric power stations	2
International trade	2
Metallurgy	5
Oil / petroleum	1
Steel production	3
Technology	25