 |
| |||
| 凿井机组; 钢绳冲击式钻机; 缆索凿井机组 | |||
| |||
| 绳式顿钻钻机 | |||
|
cable-tool rig : 2 phrases in 1 subject |
| Engineering geology | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips