| Share | Phrase |
| 12.53% | exhaust [physical/chemical] recirculation |
| 10.69% | gas recirculation |
| 5.78% | recirculation passage |
| 5.09% | recirculation conduit |
| 4.25% | recirculation system |
| 4.01% | recirculation zone |
| 3.99% | recirculation rate |
| 3.62% | recirculation valve |
| 2.19% | recirculation line |
| 2.11% | recirculation quantity |
| 1.87% | recirculation gas |
| 1.71% | recirculation [is] system |
| 1.69% | recirculation passageway |
| 1.41% | control recirculation [perform operation] |
| 1.33% | recirculation manifold |
| 1.18% | recirculation means |
| 1.00% | amount recirculation |
| 0.99% | recirculation ratio |
| 0.97% | recirculation cooler |
| 0.97% | recirculation [purpose] return |
| 0.90% | exhaust-gas recirculation |
| 0.86% | recirculation path |
| 0.84% | recirculation port |
| 0.82% | recirculation control |
| 0.79% | recirculation apparatus |
| 0.79% | recirculation channel |
| 0.78% | recirculation flow |
| 0.74% | fuel recirculation |
| 0.73% | recirculation circuit |
| 0.71% | recirculation [is] mechanism |
| 0.69% | recirculation multiply |
| 0.69% | gas recirculation |
| 0.66% | recirculation event |
| 0.60% | set according recirculation |
| 0.58% | allow recirculation [perform operation] |
| 0.56% | permit recirculation [perform operation] |
| 0.54% | recirculation [is] passage |
| 0.54% | recirculation pump |
| 0.54% | recirculation rail |
| 0.53% | recirculation principle |
| 0.51% | recirculation loop |
| 0.51% | recirculation amount |
| 0.50% | recirculation combustion |
| 0.48% | exhaust [physical/chemical] recirculation |
| 0.42% | recirculation assembly |
| 0.41% | effect recirculation [perform operation] |
| 0.41% | recirculation inlet |
| 0.40% | recirculation delay |
| 0.39% | flue recirculation |
| 0.38% | recirculation unit |
| 0.37% | recirculation to tank |
| 0.37% | recirculation [is] valve |
| 0.37% | suppress by recirculation |
| 0.35% | mixture recirculation |
| 0.34% | internal [location] recirculation |
| 0.34% | recirculation [does] recirculate |
| 0.33% | determine in recirculation |
| 0.33% | stronger recirculation |
| 0.32% | carry out recirculation [perform operation] |
| 0.32% | recirculation nozzle |
| 0.31% | conduct recirculation [perform operation] |
| 0.29% | recirculation [does] reduce |
| 0.27% | perform recirculation [perform operation] |
| 0.27% | interrupt recirculation [perform operation] |
| 0.26% | recirculation pipe |
| 0.25% | provide recirculation [perform operation] |
| 0.24% | controlled [functioning] recirculation |
| 0.24% | flow recirculation |
| 0.24% | quantity recirculation |
| 0.24% | recirculation technique |
| 0.23% | recirculation device |
| 0.22% | recirculation execution |
| 0.21% | recirculation chamber |
| 0.20% | percentage recirculation |
| 0.20% | fluid recirculation |
| 0.20% | recirculation [does] take |
| 0.20% | ensure recirculation [perform operation] |
| 0.19% | recirculation mode |
| 0.18% | recirculation function |
| 0.18% | subsequent [chronology] recirculation |
| 0.17% | maximum [size] recirculation |
| 0.17% | minimize recirculation [perform operation] |
| 0.17% | recirculation [does] increase |
| 0.17% | suppress recirculation [perform operation] |
| 0.17% | recirculation [does] cause |
| 0.17% | recirculation sleeve |
| 0.16% | recirculation through valve |
| 0.16% | recirculation outlet |
| 0.14% | recirculation region |
| 0.14% | recirculation [location] base |
| 0.14% | recirculation characteristic |
| 0.14% | recirculation pattern |
| 0.14% | conventional [typicality] recirculation |
| 0.14% | product recirculation |
| 0.14% | normal [typicality] recirculation |
| 0.13% | recirculation downstream |
| 0.13% | proper [accuracy] recirculation |
| 0.13% | external [location] recirculation |
| 0.13% | prevent recirculation [perform operation] |
| 0.13% | recirculation stream |
| 0.13% | flame [color] recirculation |
| 0.13% | start recirculation [perform operation] |
| 0.13% | recirculation housing |
| 0.12% | recirculation coefficient |
| 0.12% | portion recirculation |
| 0.12% | oil recirculation |
| 0.12% | recirculation area |
| 0.11% | include recirculation [perform operation] |
| 0.11% | reduce recirculation [perform operation] |
| 0.10% | engine recirculation |
| 0.10% | air recirculation |
| 0.09% | not recirculation |
| 0.09% | desired [effectiveness] recirculation |
| 0.08% | recirculation signal |
| 0.08% | comprise recirculation [perform operation] |
| 0.08% | cause recirculation [perform operation] |
| 0.08% | recirculation value |
| 0.08% | employ recirculation [perform operation] |
| 0.08% | recirculation operation |
| 0.08% | arrange recirculation [perform operation] |
| 0.07% | have recirculation [perform operation] |
| 0.07% | set recirculation [perform operation] |
| 0.07% | produce recirculation [perform operation] |
| 0.07% | recirculation include |
| 0.07% | require recirculation [perform operation] |
| 0.07% | recirculation [does] have |
| 0.06% | recirculation pressure |
| 0.06% | recirculation [does] include |
| 0.05% | recirculation [does] comprise |
| 0.05% | use recirculation [perform operation] |