 |
| |||
| angle drop-off; decreasing hole angle; drop; drop angle; drop-off | |||
| angle drop; drop-off hole angle; drop off | |||
| 降斜: 36 phrases in 10 subjects |
| Architecture | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Drilling | 7 |
| Mountaineering | 1 |
| Oil / petroleum | 9 |
| Skiing | 4 |
| Space | 1 |
| Technology | 9 |
| Textile industry | 2 |