| |||
radio survey | |||
radio measurement | |||
radio geodesy |
无线电测量 : 35 phrases in 13 subjects |
Air defense | 2 |
Automobiles | 1 |
Aviation | 3 |
Earth sciences | 2 |
Electronics | 3 |
General | 2 |
Geophysics | 1 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Rail transport | 1 |
Space | 5 |
Technology | 11 |
Telecommunications | 1 |