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оптическое наблюдение stresses
astronaut.	vision
оптические наблюдения
astr.	optical work
hydrol.	optical observations
phys.	optical tracking (ИСЗ)

оптическое наблюдение: 59 phrases in 20 subjects

Artillery	3
Astronautics	5
Astronomy	1
Aviation	1
Electronics	2
General	2
Makarov	1
Mass media	1
Medical	1
Medical appliances	3
Metallurgy	2
Metrology	1
Military	17
Missiles	1
Nanotechnology	4
Nautical	1
Quantum electronics	1
Security systems	4
Technology	7
Weapons and gunsmithing	1