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lower boundary stresses
energ.ind.	нижняя граница интервала
math.	нижняя грань
O&G	нижняя граница; подошва (пласта)

lower boundary : 29 phrases in 16 subjects

Aerodynamics	1
Aerohydrodynamics	4
Crystallography	1
Electronics	2
Energy industry	2
Makarov	5
Mass media	2
Mathematics	2
Metallurgy	1
Military	1
Nanotechnology	1
Physics	1
Space	2
Statistics	1
Technology	2
United Nations	1