 |
| |||
| ground control point; network point; point of control; topo beacon; fixed point | |||
| supplemental control | |||
| control point; control survey point; topobeacon | |||
|
опознак : 4 短语, 1 学科 |
| 建造 | 4 |
|
| |||
| ground control point; network point; point of control; topo beacon; fixed point | |||
| supplemental control | |||
| control point; control survey point; topobeacon | |||
|
опознак : 4 短语, 1 学科 |
| 建造 | 4 |