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medium heavy stresses
qual.cont.	умеренно тяжёлый (о режиме работы)

medium heavy : 50 phrases in 17 subjects

Air defense	1
Armored vehicles	3
Automobiles	3
Cooking	1
Ecology	1
Geology	2
Metallurgy	4
Military	4
Mineral processing	12
Mining	3
Natural resourses and wildlife conservation	1
Oil / petroleum	2
Physics	1
Quality control and standards	2
Roll stock	1
Technology	4
Transport	5