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reference system | |||
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reference system |
基准系统 : 115 phrases in 12 subjects |
Air defense | 1 |
Automobiles | 1 |
Aviation | 52 |
Computer networks | 1 |
Electric machinery | 1 |
Electronics | 15 |
French | 1 |
Geophysics | 1 |
International trade | 1 |
Nautical | 1 |
Space | 35 |
Technology | 5 |