| Share | Phrase |
|---|
| 18.72% | rotor borehole |
| 18.42% | lead-through borehole |
| 11.16% | central [location] borehole |
| 9.02% | valve borehole |
| 8.42% | radial [shape] borehole |
| 7.86% | receiving borehole |
| 6.42% | longitudinal [direction] borehole |
| 5.39% | borehole [location] extend |
| 5.31% | housing borehole |
| 3.73% | receive borehole [perform operation] |
| 1.88% | have borehole [perform operation] |
| 1.86% | provide borehole [perform operation] |
| 1.75% | fuel borehole |