Matched context for concentrate and stratify

The page lists matched contexts for concentrate and stratify.

Share - concentrate	Share - stratify	Phrase
5.55%	21.89%	{concentrate or stratify} mixture [perform operation]
4.93%	11.82%	{concentrate or stratify} fuel [perform operation]
1.74%	3.47%	{concentrate or stratify} air [perform operation]
1.74%	3.90%	{concentrate or stratify} gas [perform operation]
1.47%	3.14%	{concentrate or stratify} ratio [perform operation]
0.82%	2.26%	{concentrate or stratify} chamber [perform operation]