| Share | Phrase |
|---|
| 26.57% | descending [direction] device |
| 21.19% | descending [direction] plunger |
| 15.54% | descending [direction] grade |
| 11.59% | descending [direction] piston |
| 11.53% | descending [direction] member |
| 7.61% | descending [direction] passage |
| 5.94% | descending [direction] portion |