Matched context for presence and absence

The page lists matched contexts for presence and absence.

Share - presence	Share - absence	Phrase
3.48%	2.89%	detect {presence or absence} [perform operation]
2.11%	4.22%	{presence or absence} [does] characterize
1.30%	3.12%	flame {presence or absence}
0.90%	5.45%	signal {presence or absence}
1.37%	3.18%	solvent {presence or absence}
1.56%	1.94%	determine {presence or absence} [perform operation]
2.35%	1.59%	sense {presence or absence} [perform operation]
2.87%	0.62%	catalyst {presence or absence}
0.48%	2.47%	compound {presence or absence}
1.38%	1.35%	indicate {presence or absence} [perform operation]
0.82%	1.44%	oxygen {presence or absence}
0.55%	1.19%	{presence or absence} [does] cause
0.18%	1.52%	{presence or absence} [does] indicate
0.22%	0.79%	{presence or absence} [does] make
0.41%	0.48%	{presence or absence} [does] prevent
0.36%	0.43%	{presence or absence} [does] reduce
0.26%	1.21%	agent {presence or absence}
0.47%	0.72%	air {presence or absence}
0.21%	2.65%	close in {presence or absence}
0.27%	1.14%	combustion {presence or absence}
0.61%	0.69%	condition {presence or absence}
0.22%	1.30%	fluid {presence or absence}
0.31%	2.41%	force {presence or absence}
0.32%	0.39%	fuel {presence or absence}
0.48%	0.98%	gas {presence or absence}
0.38%	2.06%	occupant {presence or absence}
0.30%	2.16%	pressure {presence or absence}
0.49%	0.96%	responsive to {presence or absence}
0.21%	0.77%	valve {presence or absence}