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просвечивание y-лучами stresses
therm.eng.	fluorescent-penetrate test; y-ray examination

просвечивание y- лучами: 36 phrases in 15 subjects

Chemistry	1
Construction	1
Drilling	1
General	2
Makarov	1
Medical appliances	3
Metallurgy	3
Natural resourses and wildlife conservation	1
Nautical	4
Oil / petroleum	4
Physics	2
Pipelines	7
Roll stock	1
Technology	3
Thermal engineering	2