Matched context for sub-system and pfr

The page lists matched contexts for sub-system and pfr.

Share - sub-system	Share - pfr	Phrase
4.20%	15.07%	pressure {sub-system or pfr}
2.12%	16.76%	wheel {sub-system or pfr}
1.07%	10.11%	hydraulic [physical/chemical] {sub-system or pfr}
0.50%	8.46%	cylinder {sub-system or pfr}