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lowest stage stresses
hydrol.	наинизший уровень
low stage
hydrogr.	меженный уровень
tech.	минимальный уровень; низкий уровень

lowest stage: 51 phrases in 18 subjects

Aerohydrodynamics	1
Agriculture	2
Astronautics	1
Computers	1
Construction	2
Energy industry	3
Forestry	1
Geology	5
Hydraulic engineering	4
Hydrology	3
Makarov	2
Metallurgy	1
Oncology	1
Refrigeration	12
Road works	1
Technology	2
Thermal engineering	7
Water resources	2