水文地理测量 | |
desert. | hydrographic survey |
"六分仪" | |
mil. | "Sekstan" |
六分仪 | |
earth.sc. | sextant' |
el. | sextant |
hydroel.st. | sextant |
space | sextant |
tech. | surveying sextant |
| |||
hydrographic survey | |||
hydrographic measurement; hydrographical measurement |
水文地理测量 : 8 phrases in 3 subjects |
Electronics | 3 |
Shipbuilding | 1 |
Technology | 4 |