Matched context for evacuation and admission

The page lists matched contexts for evacuation and admission.

Share - evacuation	Share - admission	Phrase
4.98%	12.06%	air {evacuation or admission}
3.38%	6.54%	fluid {evacuation or admission}
5.53%	3.90%	{evacuation or admission} valve
2.14%	6.38%	fuel {evacuation or admission}
3.15%	2.25%	{evacuation or admission} device
2.80%	2.20%	gas {evacuation or admission}
2.67%	1.51%	{evacuation or admission} passage
2.45%	1.32%	prevent {evacuation or admission} [perform operation]
3.08%	0.76%	permit {evacuation or admission} [perform operation]