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трёхвалентный adj. stresses
chem.	trivalent; tervalent
med.	triad
tech.	bivalent

трёхвалентный: 125 phrases in 22 subjects

Chemical nomenclature	4
Chemistry	27
Construction	1
Ecology	1
Electrical engineering	1
Electrochemistry	1
Electronics	2
General	1
Immunology	2
Inorganic chemistry	13
Leather	1
Makarov	12
Mathematics	2
Medical	4
Metallurgy	2
Nanotechnology	1
Oil / petroleum	36
Oil and gas	5
Physics	1
Sakhalin	2
Technology	5
Thermal engineering	1