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检索系统 | |||
搜索系统〔设备〕 | |||
搜索系统 |
search system: 65 phrases in 14 subjects |
Air defense | 4 |
Automobiles | 1 |
Aviation | 8 |
Earth sciences | 6 |
Economy | 1 |
Electronics | 18 |
Fishery fishing industry | 1 |
General | 1 |
Geology | 1 |
Librarianship | 1 |
Navigation | 1 |
Space | 13 |
Technology | 7 |
Telecommunications | 2 |