Matched context for backing and impingement

The page lists matched contexts for backing and impingement.

Share - backing	Share - impingement	Phrase
84.26%	5.23%	{backing or impingement} plate
0.45%	14.25%	{backing or impingement} surface
0.48%	9.04%	{backing or impingement} face
0.15%	2.60%	{backing or impingement} chamber
0.21%	1.08%	{backing or impingement} element
0.10%	1.32%	{backing or impingement} means
0.69%	0.51%	{backing or impingement} member
0.21%	2.58%	{backing or impingement} section