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open well
| foundation
| open well | |
| eng.geol. | 大口径井; 开敞竖井; 普通井 |
| hydroel.st. | 大口井; 开敞式竖井 |
| foundation | |
| gen. | 创办 |
| |||
| 敞式井 | |||
| 大口径井; 开敞竖井; 普通井 | |||
| 大口井; 开敞式竖井 | |||
| 露明梯井; 开敞式竖井; 普通水井; 大口径井; 敞口竖井; 敞口井 | |||
| open well: 27 phrases in 5 subjects |
| Architecture | 1 |
| Drilling | 2 |
| Engineering geology | 6 |
| Oil / petroleum | 1 |
| Technology | 17 |