 |
| |||
| 采用立井、斜井、平碉等任何两种或两种以上的井田开拓方式 | |||
| 联合开拓 | |||
| combined development: 3 Phrasen in 3 Thematiken |
| Informationstechnik | 1 |
| Technik | 1 |
| Wirtschaft | 1 |
|
| |||
| 采用立井、斜井、平碉等任何两种或两种以上的井田开拓方式 | |||
| 联合开拓 | |||
| combined development: 3 Phrasen in 3 Thematiken |
| Informationstechnik | 1 |
| Technik | 1 |
| Wirtschaft | 1 |