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High Efficiency Particle Absorption
el., abbr.	HEPA

High Efficiency : 55 phrases in 19 subjects

Analytical chemistry	6
Automobiles	1
Business	1
Earth sciences	2
Economics	4
Electronics	1
Energy industry	5
Environment	3
General	4
Information technology	2
Life sciences	1
Mechanic engineering	2
Microelectronics	1
Natural resourses and wildlife conservation	2
Natural sciences	1
Nuclear physics	11
Research and development	1
Technology	6
Trade unions	1