ground reference
| system
| ground-reference | |
| el. | 参考地面 |
| system | |
| gen. | 体 |
| IMF. | 安排 |
| leath. | 网 |
| med. | 派 |
| met. | 装置 |
| met. од. | 系 |
| tech. | 制度; 方法 |
| tech. од. | 体系; 系统 |
| |||
| 参考地面 | |||
|
ground reference : 12 phrases in 7 subjects |
| Automobiles | 2 |
| Aviation | 5 |
| Earth sciences | 1 |
| Electric machinery | 1 |
| Geophysics | 1 |
| Nautical | 1 |
| Technology | 1 |