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系统单位 | |||
系统模件 | |||
系统模块 |
system module: 74 phrases in 12 subjects |
Air defense | 1 |
Automobiles | 9 |
Aviation | 19 |
Earth sciences | 2 |
Electronics | 24 |
Information technology | 3 |
Librarianship | 1 |
Oil / petroleum | 1 |
Space | 7 |
Technology | 4 |
Telecommunications | 2 |
United Nations | 1 |