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na prep.
gen.	on; at; per; to; upon; up
na oczekiwanie prep.
gen.	for
na termin prep.
gen.	by
na miejsce prep.
gen.	in
Polish thesaurus
EN abbr.
abbr., construct.	elektroda do napawania
NA abbr.
abbr., antenn., opt.	apertura numeryczna

na: 7580 phrases in 138 subjects

Accounting	91
Agriculture	682
Agronomy	30
American usage, not spelling	21
Ampelography	1
Analytical chemistry	23
Animal husbandry	3
Antennas and waveguides	2
Architecture	2
Astronautics	4
Automated equipment	1
Automatic control	14
Automobiles	1
Banking	20
Beekeeping	12
Biology	7
Botany	8
British usage, not spelling	17
Building materials	1
Building structures	10
Business	16
Cables and cable production	5
Card games	1
Cardiology	1
Ceramics	1
Chemical fibers	1
Chemistry	135
Coal	1
Commerce	44
Communications	28
Computer networks	8
Construction	820
Criminal law	9
Customs	10
Data processing	4
Demography	6
Dyes	19
Earth sciences	5
Ecology	5
Economy	233
Education	32
Electric machinery	7
Electric motors	3
Electric traction	18
Electrical engineering	7
Electricity generation	7
Electronics	41
Employment	5
Energy industry	36
Entomology	1
Environment	201
European Union	7
Explosives and Explosive Ordnance Disposal	1
Fat-and-oil industry	1
Figurative	17
Finances	372
Fish farming pisciculture	52
Food industry	19
Forestry	72
General	2624
Government, administration and public services	24
Health care	80
Hobbies and pastimes	4
Horticulture	7
Human rights activism	90
Hydraulic engineering	1
Hydrology	2
Ichthyology	6
Immigration and citizenship	55
Industry	13
Information technology	19
Insurance	28
International trade	6
Isolation	13
Labor law	11
Labor organization	6
Law	198
Life sciences	14
Lighting other than cinema	4
Magnetics	13
Marketing	3
Mathematics	20
Mechanic engineering	2
Mechanics	5
Medical	165
Melioration	1
Metallurgy	5
Meteorology	2
Microsoft	236
Mineral products	4
Mining	1
Natural resourses and wildlife conservation	2
Natural sciences	11
Nautical	20
Nuclear physics	19
Obsolete / dated	29
Oil / petroleum	4
Patents	7
Pharmacology	3
Pharmacy and pharmacology	13
Photography	2
Physical sciences	5
Phytophathology	20
Piezoelectric crystals	3
Plastics	10
Politics	47
Power lines	2
Power system protection	2
Procedural law	20
Radio	16
Radiology	6
Rail transport	9
Reliability	27
Research and development	7
Resins	2
Satellite communications	2
Scientific	4
Security systems	4
Semiconductors	3
Social science	84
Sociology	13
Soil science	8
Sound recording	7
Statistics	14
Sugar production	1
Superconductivity	8
Taxes	2
Technology	38
Telecommunications	12
Telegraphy	8
Telephony	5
Trade unions	9
Transport	135
United Nations	30
Vacuum tubes	5
Veterinary medicine	5
Water supply	1
Zootechnics	33