| Share | Phrase |
| 17.15% | prolonged [time duration] exposure |
| 11.50% | direct [shape] exposure |
| 9.70% | exposure nanometer |
| 9.04% | withstand exposure [perform operation] |
| 7.55% | coolant exposure |
| 5.53% | inlet for exposure |
| 4.55% | prevent exposure [perform operation] |
| 3.72% | minimum [size] exposure |
| 3.40% | exposure time |
| 3.24% | minimize exposure [perform operation] |
| 3.13% | fluid exposure |
| 2.57% | inhibit exposure [perform operation] |
| 2.40% | heat [temperature] exposure |
| 2.33% | exposure [does] cause |
| 2.02% | temperature exposure |
| 1.92% | avoid exposure [perform operation] |
| 1.63% | exposure have |
| 1.58% | reduce exposure [perform operation] |
| 1.53% | high [size] exposure |
| 1.30% | exposure surface |
| 1.12% | exposure section |
| 1.10% | provide exposure [perform operation] |
| 0.95% | not exposure |
| 0.92% | fuel exposure |