 |
| |||
| sulfaee relief | |||
| surface relief | |||
| accident of the ground | |||
| surface irregularity | |||
| ground relief; land wave; surface undulation; terrain morphology; terrain relief | |||
| 地面起伏: 15 phrases in 8 subjects |
| Desert science | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| Golf | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 7 |
| Wind Energy | 1 |