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дымовые газы stresses
chem.	gaz de combustion; gaz brûlés
met.	fumées f; gaz de carneau; gaz de fumée
mil.	fumée f
tech.	gaz de cheminée
дымовой газ
nucl.phys., ecol.	gaz de combustion; fumées f
O&G. tech.	gaz de fumée

дымовые газы: 5 phrases in 3 subjects

Chemistry	2
Metallurgy	1
Natural resourses and wildlife conservation	2