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temporal mapping |
时 间定位 : 25 phrases in 12 subjects |
Air defense | 4 |
Automobiles | 1 |
Aviation | 1 |
Business | 1 |
Earth sciences | 1 |
Electronics | 1 |
Hydroelectric power stations | 1 |
Information technology | 2 |
Multimedia | 1 |
Reliability | 2 |
Space | 8 |
Technology | 2 |