a function of

: 54 phrases in 17 subjects

Air defense	1
Business	7
China	1
Commerce	1
Construction	1
Ecology	1
Economics	3
Explosives and Explosive Ordnance Disposal	1
General	3
Information technology	4
Mathematics	2
Measuring instruments	1
Oceanography & oceanology	1
Scientific	2
Space	2
Statistics	1
Technology	22