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红外预警
| 卫星
| 红外 预警 | |
| tech. | infrared early-warning |
| GPS 卫星 | |
| space | GPS satellites |
| N 卫星 | |
| space | N-SAT |
| 卫星 | |
| environ. | satellite |
| rem.sens. | satellite |
| space | megabirds; satellites, balloons and rockets; moon |
| 卫星 DNA | |
| life.sc. | satellite DNA |
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| infrared early-warning | |||
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| infrared early warning | |||
| 红外预警: 8 phrases in 4 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Electronics | 2 |
| Space | 3 |
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