Matched context for shutter and proportioning

The page lists matched contexts for shutter and proportioning.

Share - shutter	Share - proportioning	Phrase
13.88%	57.21%	{shutter or proportioning} valve
3.02%	8.21%	{shutter or proportioning} assembly
1.72%	2.33%	{shutter or proportioning} means
4.10%	0.61%	{shutter or proportioning} element
4.48%	0.22%	{shutter or proportioning} member
0.60%	0.26%	provide {shutter or proportioning} [perform operation]