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三角测量点
| 标石
| 三角测量点 | |
| avia. | triangulation station |
| 标石 | |
| agric. | guardstone |
| bridg.constr. | markstone |
| hydroel.st. | monument |
| |||
| triangulation station | |||
| trig point | |||
| 三角测量点: 30 phrases in 5 subjects |
| Earth sciences | 1 |
| Electronics | 1 |
| Mountaineering | 2 |
| Space | 2 |
| Technology | 24 |
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