surface casing
| depth
| surface casing | |
| met. | 表层套管 |
| oil | 地面套管 |
| depth | |
| met. | 浓度 |
| oil | 船深 |
| perf. | 浓度 |
| row. | 后帆椽长度 |
| space | 层次; 深 |
| space од. | 浓度; 能见度极限 |
| sport. | 厚度; 深 |
| |||
| 表层套管 | |||
| 地面套管 | |||
| 地面套筒; 表面防护罩; 外壳 | |||
|
surface casing : 10 phrases in 4 subjects |
| Drilling | 1 |
| Earth sciences | 5 |
| Oil / petroleum | 2 |
| Technology | 2 |