| Share | Phrase |
|---|
| 30.32% | flame [color] propagation |
| 11.33% | flame propagation |
| 9.03% | propagation delay |
| 5.53% | propagation speed |
| 3.69% | propagation distance |
| 3.61% | propagation velocity |
| 2.50% | prevent propagation [perform operation] |
| 2.49% | wave propagation |
| 2.43% | front propagation |
| 1.51% | propagation rate |
| 1.45% | propagation pipe |
| 1.39% | good [character] propagation |
| 1.30% | slow [motion] propagation |
| 1.30% | initiate propagation [perform operation] |
| 1.29% | vibration propagation |
| 1.25% | poor [amount] propagation |
| 1.13% | rapid [motion] propagation |
| 1.12% | propagation receive |
| 1.07% | propagation direction |
| 1.07% | fire propagation |
| 0.98% | improve propagation [perform operation] |
| 0.97% | enhance propagation [perform operation] |
| 0.89% | accelerate propagation [perform operation] |
| 0.88% | insure propagation [perform operation] |
| 0.85% | front [location] propagation |
| 0.84% | chain propagation |
| 0.82% | delay propagation [perform operation] |
| 0.81% | direct [shape] propagation |
| 0.81% | propagation signal |
| 0.80% | propagation combustion |
| 0.80% | combustion propagation |
| 0.74% | ensure propagation [perform operation] |
| 0.65% | propagation time |
| 0.65% | downstream propagation |
| 0.58% | propagation chamber |
| 0.45% | propagation mode |
| 0.41% | enable propagation [perform operation] |
| 0.36% | propagation [does] occur |
| 0.36% | propagation [does] cause |
| 0.33% | reduce propagation [perform operation] |
| 0.30% | signal propagation |
| 0.29% | pressure propagation |
| 0.23% | show propagation [perform operation] |
| 0.18% | provide propagation [perform operation] |