质心跟踪 | |
space | centroid tracking |
SA干扰 | |
UN geol. | Selective Availability |
干扰 | |
dril. | barrage |
hydroel.st. | interference |
IMF. | disturbance |
met. | noise; obstruction |
space | counter measure |
UN econ. | disruption |
| |||
centroid tracking |
质心跟踪 : 4 phrases in 2 subjects |
Air defense | 1 |
Space | 3 |