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effective number stresses
metrol.	эффективное число

effective number : 39 phrases in 20 subjects

Analytical chemistry	2
Automated equipment	3
Business	1
Chemistry	4
Chromatography	2
Communications	1
Electronics	1
General	1
Hydraulic engineering	1
Makarov	2
Mass media	1
Mechanic engineering	1
Metallurgy	2
Nautical	3
Oil / petroleum	1
Physics	4
Soviet	1
Technology	5
Textile industry	2
Virology	1