Russian ⇄ Spanish

постоянная n stresses
chem.	constante f
econ.	constante f (величина); factor constante
постоянные n
tech.	constantes f (см.тж. constante)
постоянный adj.
gen.	hito; inmóvil; asentado; asiduo (о посетителе и т.п.); continuo; de número; espeso; fijo; igual; ininterrumpido; perpetuo; perseverante; persistente; sempiterno; uniforme; estable; eterno; imperturbable; perenne; continuado (Al cabo Rand Baker: por su continuado acatamiento y respeto por los preceptos básicos de esta organización, se. nastfyl)
chem.	estacionario
el.	continua (corriente); constante
law	efectivo (о должности); perseverante (ulkomaalainen)
med.	permanente
oil	inmovible; firme; inmoble; invariable

постоянная: 913 phrases in 54 subjects

Administrative law	14
Agriculture	2
American usage, not spelling	1
Antennas and waveguides	5
Automated equipment	1
Aviation	174
Biology	1
Business	1
Chemistry	10
Chile	3
Commerce	4
Computers	1
Construction	2
Corporate governance	6
Diplomacy	1
Dyes	1
Economy	52
Electric machinery	1
Electrical engineering	2
Electricity	1
Electrochemistry	1
Electronics	188
Environment	1
Fishery fishing industry	6
Food service and catering	3
General	47
Geology	39
Informal	3
Information technology	3
International Monetary Fund	14
Internet	1
Labor law	9
Law	52
Magnetics	4
Mathematics	5
Medical	25
Mexican	2
Microsoft	8
Military	1
Name of organization	34
Nephrology	1
Notarial practice	1
Oil / petroleum	21
Packaging	5
Patents	5
Physics	1
Politics	2
Power electronics	34
Radiology	1
Sociology	1
Technology	95
United Nations	13
Water resources	2
Water supply	2