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| 系统指示器 | |||
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system indicator : 63 phrases in 14 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 25 |
| Business | 4 |
| Ecology | 2 |
| Economy | 1 |
| Electronics | 2 |
| International trade | 1 |
| Name of organization | 1 |
| Nautical | 2 |
| Space | 5 |
| Technology | 13 |
| Telecommunications | 1 |
| United States | 1 |
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