Matched context for opening/closing and throttle

The page lists matched contexts for opening/closing and throttle.

Share - opening/closing	Share - throttle	Phrase
14.29%	3.71%	{opening/closing or throttle} passage [perform operation]
14.82%	2.57%	{opening/closing or throttle} valve [perform operation]
6.24%	3.29%	valve [does] {opening/closing or throttle}
7.06%	0.76%	{opening/closing or throttle} opening [perform operation]