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principal adj.
comp., MS	padre, entità principale
econ., fin.	capitale
el.	centrale
med.	primario

principal: 793 phrases in 62 subjects

Accounting	3
Agriculture	36
Antennas and waveguides	1
Astronautics	1
Brazil	26
Chemistry	13
Coal	3
Commerce	2
Communications	76
Construction	5
Cultural studies	3
Customs	1
Earth sciences	30
Economy	8
Electric machinery	4
Electric motors	1
Electric traction	4
Electrical engineering	1
Electronics	57
Energy industry	9
Environment	4
Finances	34
General	49
Government, administration and public services	16
Health care	1
Hobbies and pastimes	3
Industry	8
Information technology	55
Insurance	3
Investment	2
Isolation	2
Labor law	5
Law	32
Life sciences	8
Lighting other than cinema	1
Marketing	4
Materials science	1
Mathematics	3
Mechanic engineering	57
Medical	15
Metallurgy	7
Microsoft	41
Natural sciences	7
Nuclear physics	2
Patents	1
Pharmacy and pharmacology	3
Politics	7
Polymers	1
Radio	1
Rail transport	4
Semiconductors	2
Social science	1
Sound recording	1
Statistics	10
Technology	1
Telegraphy	1
Telephony	4
Transformers	1
Transport	100
Vacuum tubes	1
Wood processing	1
Work flow	9