| Share | Phrase |
|---|
| 20.47% | envelope stream [perform operation] |
| 15.35% | envelope electrode [perform operation] |
| 13.07% | head [does] envelope |
| 12.08% | envelope tube [perform operation] |
| 11.99% | housing [does] envelope |
| 9.84% | envelope portion [perform operation] |
| 8.69% | envelope surface [perform operation] |
| 8.45% | envelope flow [perform operation] |