 |
| |||
| classification of documents | |||
|
文 件分类 : 23 phrases in 8 subjects |
| Business | 3 |
| Electronics | 1 |
| Information technology | 6 |
| Metallurgy | 1 |
| Space | 2 |
| Technology | 8 |
| Telecommunications | 1 |
| Textile industry | 1 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips