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защита дыхания stresses
el.	respiratory protection
med.appl.	breath guard
защита органов дыхания
nucl.phys., OHS	respiratory protection

защита дыхания: 37 phrases in 20 subjects

Architecture	1
Aviation	2
Aviation medicine	2
Electronics	2
Firefighting and fire-control systems	1
Forestry	1
General	3
Medical	1
Military	1
Nautical	2
Occupational health & safety	11
Oil / petroleum	1
Oil and gas	1
Personal protective equipment	1
Rail transport	1
Sakhalin	1
Security systems	2
Technology	1
Weapons of mass destruction	1
Welding	1