| Share | Phrase |
|---|
| 20.08% | sustained [time duration] discharge |
| 16.03% | sustained [time duration] operation |
| 11.24% | sustained [time duration] flame |
| 11.03% | sustained [time duration] combustion |
| 9.25% | sustained [time duration] wheel-lock |
| 7.40% | sustained [time duration] arc |
| 6.47% | sustained [time duration] blast |
| 5.64% | sustained [time duration] use |
| 5.15% | sustained [time duration] stroke |
| 4.13% | sustained [time duration] mode |
| 3.51% | sustained [time duration] period |