Matched context for desorb and purify

The page lists matched contexts for desorb and purify.

Share - desorb	Share - purify	Phrase
2.67%	18.01%	{desorb or purify} gas [perform operation]
5.95%	4.78%	{desorb or purify} nox [perform operation]
3.38%	2.51%	{desorb or purify} in gas
1.38%	0.57%	{desorb or purify} fuel [perform operation]
0.74%	0.91%	{desorb or purify} modal can