Matched context for efficiency and operation

The page lists matched contexts for efficiency and operation.

Share - efficiency	Share - operation	Phrase
2.59%	2.20%	engine {efficiency or operation}
0.72%	0.11%	achieve {efficiency or operation} [perform operation]
0.38%	0.14%	affect {efficiency or operation} [perform operation]
0.13%	0.19%	assembly {efficiency or operation}
0.32%	0.48%	braking [purpose] {efficiency or operation}
0.37%	1.61%	braking [purpose] {efficiency or operation}
0.17%	0.33%	device {efficiency or operation}
0.13%	0.18%	ensure {efficiency or operation} [perform operation]
1.12%	0.10%	fuel {efficiency or operation}
1.59%	0.28%	high [size] {efficiency or operation}
0.15%	0.09%	ignition {efficiency or operation}
0.39%	0.28%	low [size] {efficiency or operation}
0.19%	0.14%	power {efficiency or operation}
0.26%	0.31%	pump {efficiency or operation}
0.34%	0.16%	scavenging {efficiency or operation}
0.52%	0.77%	system {efficiency or operation}