Matched context for regeneration and opening/closing

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

Share - regeneration	Share - opening/closing	Phrase
2.77%	24.81%	{regeneration or opening/closing} valve
2.07%	9.79%	{regeneration or opening/closing} means
2.34%	7.17%	{regeneration or opening/closing} timing
2.83%	4.53%	{regeneration or opening/closing} control
0.77%	6.46%	{regeneration or opening/closing} operation