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концентрация газа stresses
tech.	gas concentration

концентрация газа: 37 phrases in 19 subjects

Drilling	1
Ecology	1
Energy industry	10
Firefighting and fire-control systems	2
Gas processing plants	1
Makarov	1
Medical	2
Metallurgy	1
Meteorology	1
Military	1
Mining	1
Natural resourses and wildlife conservation	2
Nautical	1
Oil / petroleum	2
Oilfields	1
Production	1
Technology	6
Transport	1
Weapons of mass destruction	1