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内孔 nèikǒng
avia.	female
el.mach.	internal hole
expl.	inter-hole
oil	inner bore
内孔｛古｝ nèikǒng
earth.sc.	internal pores
内孔粉孢，osculum nèikǒng
agric.	os

内 孔: 259 phrases in 25 subjects

Agriculture	10
Anatomy	3
Architecture	2
Automobiles	6
Aviation	3
Compressors	1
Construction	1
Drilling	1
Earth sciences	2
Electronics	8
Engineering geology	17
Explosives and Explosive Ordnance Disposal	19
Footwear	1
General	7
Hydroelectric power stations	2
Latin	3
Life sciences	1
Metallurgy	49
Oil / petroleum	17
Otorhinolaryngology	4
Space	7
Steel production	2
Surgery	3
Technology	88
Telecommunications	2