Matched context for concentration and presence

The page lists matched contexts for concentration and presence.

Share - concentration	Share - presence	Phrase
3.60%	3.48%	detect {concentration or presence} [perform operation]
13.71%	0.82%	oxygen {concentration or presence}
0.74%	2.35%	sense {concentration or presence} [perform operation]
2.22%	0.54%	vapor {concentration or presence}
0.16%	0.34%	{concentration or presence} [does] increase
0.26%	0.18%	{concentration or presence} [does] indicate
0.17%	0.47%	air {concentration or presence}
0.33%	0.27%	combustion {concentration or presence}
2.52%	0.36%	component {concentration or presence}
0.18%	0.48%	compound {concentration or presence}
0.28%	0.34%	contaminant {concentration or presence}
0.26%	1.56%	determine {concentration or presence} [perform operation]
0.41%	1.43%	dye {concentration or presence}
1.06%	0.32%	fuel {concentration or presence}
1.66%	0.48%	gas {concentration or presence}
0.33%	1.28%	hydrocarbon {concentration or presence}
0.28%	1.13%	hydrogen {concentration or presence}
0.26%	1.38%	indicate {concentration or presence} [perform operation]
0.49%	0.22%	mixture {concentration or presence}
0.27%	0.23%	monitor {concentration or presence} [perform operation]
0.20%	0.28%	oil {concentration or presence}