Matched context for recirculation and purifier

The page lists matched contexts for recirculation and purifier.

Share - recirculation	Share - purifier	Phrase
12.53%	32.35%	exhaust [physical/chemical] {recirculation or purifier}
10.69%	20.06%	gas {recirculation or purifier}
0.48%	4.31%	exhaust [physical/chemical] {recirculation or purifier}
0.21%	1.61%	{recirculation or purifier} chamber
0.13%	1.62%	{recirculation or purifier} downstream
0.05%	1.63%	{recirculation or purifier} [does] comprise
0.07%	0.96%	{recirculation or purifier} [does] have
0.10%	1.56%	air {recirculation or purifier}
0.11%	1.38%	include {recirculation or purifier} [perform operation]