 |
| |||
| 固定深度 | |||
|
constant-depth : 20 phrases in 7 subjects |
| Agriculture | 1 |
| Earth sciences | 1 |
| Geophysics | 3 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Technology | 11 |
| United Nations | 1 |
|
| |||
| 固定深度 | |||
|
constant-depth : 20 phrases in 7 subjects |
| Agriculture | 1 |
| Earth sciences | 1 |
| Geophysics | 3 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Technology | 11 |
| United Nations | 1 |