| Share | Phrase |
|---|
| 9.55% | efficient [effectiveness] operation |
| 9.23% | efficient [effectiveness] combustion |
| 4.63% | efficient [effectiveness] burning |
| 4.25% | efficient [effectiveness] manner |
| 3.63% | more efficient |
| 3.15% | efficient [effectiveness] use |
| 3.01% | efficient [effectiveness] system |
| 2.80% | efficient [effectiveness] engine |
| 2.59% | more [degree] efficient |
| 2.38% | efficient [effectiveness] transfer |
| 2.02% | highly [degree] efficient |
| 1.89% | efficient [effectiveness] means |
| 1.87% | efficient [effectiveness] braking |
| 1.87% | efficient [effectiveness] cooling |
| 1.86% | efficient [effectiveness] method |
| 1.52% | efficient [effectiveness] device |
| 1.36% | efficient [effectiveness] ignition |
| 1.36% | highly efficient |
| 1.16% | efficient [effectiveness] utilization |
| 1.08% | efficient [effectiveness] atomization |
| 1.06% | efficient [effectiveness] scavenging |
| 1.02% | efficient [effectiveness] make |
| 1.00% | efficient [effectiveness] cleaning |
| 0.92% | efficient [effectiveness] way |
| 0.91% | efficient [effectiveness] control |
| 0.90% | efficient [effectiveness] temperature |
| 0.89% | efficient [effectiveness] converter |
| 0.87% | efficient [effectiveness] design |
| 0.84% | efficient [effectiveness] conversion |
| 0.82% | efficient [effectiveness] performance |
| 0.80% | less efficient |
| 0.79% | efficient [effectiveness] process |
| 0.77% | efficient [effectiveness] assembly |
| 0.77% | efficient [effectiveness] flow |
| 0.76% | efficient [effectiveness] filter |
| 0.75% | efficient [effectiveness] pump |
| 0.73% | efficient [effectiveness] action |
| 0.71% | efficient [effectiveness] fuel |
| 0.69% | efficient [effectiveness] heating |
| 0.67% | efficient [effectiveness] mixing |
| 0.65% | efficient [effectiveness] brake |
| 0.63% | efficient [effectiveness] removal |
| 0.57% | efficient in operation |
| 0.56% | efficient [effectiveness] vaporization |
| 0.55% | efficient [effectiveness] mixture |
| 0.53% | efficient [effectiveness] exhaust |
| 0.48% | very efficient |
| 0.47% | efficient [effectiveness] apparatus |
| 0.47% | efficient [effectiveness] structure |
| 0.47% | efficient [effectiveness] consumption |
| 0.46% | efficient [effectiveness] burn |
| 0.45% | efficient [effectiveness] construction |
| 0.45% | efficient [effectiveness] reaction |
| 0.44% | efficient [effectiveness] become |
| 0.44% | efficient [effectiveness] range |
| 0.43% | efficient [effectiveness] mechanism |
| 0.43% | efficient [effectiveness] point |
| 0.40% | efficient [effectiveness] absorption |
| 0.40% | efficient [effectiveness] driving |
| 0.40% | efficient [effectiveness] functioning |
| 0.40% | efficient [effectiveness] fuel |
| 0.40% | efficient [effectiveness] generation |
| 0.38% | efficient [effectiveness] speed |
| 0.36% | efficient [effectiveness] path |
| 0.36% | much efficient |
| 0.34% | efficient [effectiveness] energy |
| 0.34% | efficient [effectiveness] production |
| 0.34% | particularly efficient |
| 0.34% | efficient [effectiveness] it |
| 0.33% | efficient [effectiveness] generator |
| 0.33% | efficient [effectiveness] vehicle |
| 0.32% | efficient [effectiveness] movement |
| 0.31% | correction [attribute] efficient |
| 0.31% | efficient [effectiveness] motor |
| 0.30% | efficient [effectiveness] effect |
| 0.30% | efficient [effectiveness] screw |
| 0.29% | efficient [effectiveness] correction |
| 0.29% | efficient [effectiveness] delivery |
| 0.29% | energy [attribute] efficient |
| 0.29% | efficient [effectiveness] lubrication |
| 0.29% | efficient [effectiveness] arrangement |
| 0.29% | far efficient |
| 0.29% | efficient [effectiveness] circuit |
| 0.29% | efficient [effectiveness] capability |
| 0.28% | efficient [effectiveness] set |
| 0.27% | efficient [effectiveness] type |
| 0.26% | efficient [effectiveness] solution |
| 0.26% | efficient [effectiveness] burner |
| 0.26% | efficient [effectiveness] seal |
| 0.25% | very [degree] efficient |
| 0.25% | efficient [effectiveness] source |
| 0.25% | efficient [effectiveness] stroke |
| 0.24% | fuel [attribute] efficient |
| 0.23% | efficient [effectiveness] connection |
| 0.22% | efficient [effectiveness] power |
| 0.22% | efficient [effectiveness] relationship |
| 0.22% | efficient [effectiveness] force |
| 0.22% | efficient [effectiveness] unit |
| 0.21% | efficient [effectiveness] condition |
| 0.18% | extremely efficient |
| 0.18% | less [degree] efficient |
| 0.08% | relatively [degree] efficient |