| |||
| 文件回收系统 | |||
| 文件检索系统 | |||
|
document retrieval system : 14 phrases in 8 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Data processing | 1 |
| Electronics | 1 |
| Information technology | 2 |
| Space | 4 |
| Technology | 3 |
| Telecommunications | 1 |
| |||
| 文件回收系统 | |||
| 文件检索系统 | |||
|
document retrieval system : 14 phrases in 8 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Data processing | 1 |
| Electronics | 1 |
| Information technology | 2 |
| Space | 4 |
| Technology | 3 |
| Telecommunications | 1 |