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to phrases
high efficiency particulate air
avia.
高效粒子空气
earth.sc.
高效散式空气
English thesaurus
High-Efficiency Particulate Air
abbr., post
HEPA
(air filtration category)
high efficiency particulate air
:
9 phrases
in 6 subjects
Chemistry
1
Ecology
1
Electronics
3
Nuclear physics
1
Refrigeration
1
Technology
2
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