pipe driving
| grouting method
| pipe driving | |
| eng.geol. | 下套管 |
| grouting method | |
| bridg.constr. | 灌浆法 |
| earth.sc. | 注浆法 |
| |||
| 下套管 | |||
|
pipe driving : 6 phrases in 5 subjects |
| Bridge construction | 1 |
| Drilling | 1 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |