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длительность периода stresses
media.	deenergized period length

длительность периода: 40 phrases in 20 subjects

Applied mathematics	1
Astronautics	1
Australian	1
Automated equipment	1
Business	1
Economy	1
Energy industry	1
Energy system	3
Finances	1
General	1
Makarov	3
Mass media	5
Medical	7
Medical appliances	2
Oil processing plants	2
Pharmacology	1
Programming	4
Radio	2
Technology	1
Thermal engineering	1