Matched context for back-up and fluid-pressure

The page lists matched contexts for back-up and fluid-pressure.

Share - back-up	Share - fluid-pressure	Phrase
7.10%	25.52%	{back-up or fluid-pressure} source
2.56%	49.10%	{back-up or fluid-pressure} valve
0.65%	7.22%	{back-up or fluid-pressure} unit
0.92%	2.51%	{back-up or fluid-pressure} device
0.39%	4.32%	{back-up or fluid-pressure} means