 |
| |||
| Earth observation system (美国、西欧、日本联合的对地观测卫星) | |||
| Earth observing system | |||
| earth observation system | |||
| earth observing system (美国、西欧、日本联合的对地观测卫星系统) | |||
| 地球观测系统: 38 phrases in 12 subjects |
| Aviation | 4 |
| Desert science | 2 |
| Earth sciences | 8 |
| Ecology | 1 |
| Electronics | 1 |
| Environment | 2 |
| Geology | 3 |
| Geophysics | 1 |
| Space | 7 |
| Technology | 4 |
| United Nations | 2 |
| United States | 3 |