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filtres à air
patents.	air filters
filtre à air
construct.	air strainer
environ.	air filter; air screen
forestr.	airfilter
industr.	air-filter
industr., construct.	air cleaner

filtres à air: 57 phrases in 15 subjects

Agriculture	1
Chemistry	1
Coal	1
Construction	8
Environment	19
General	1
Health care	1
Mechanic engineering	8
Medical appliances	1
Natural resourses and wildlife conservation	2
Natural sciences	1
Nuclear physics	3
Physical sciences	1
Technology	2
Transport	7