 |
| |||
| frequency of use | |||
| usable frequency | |||
| 使用频率: 20 phrases in 12 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Business | 1 |
| Construction | 2 |
| Electronics | 3 |
| Geophysics | 3 |
| Information technology | 1 |
| Librarianship | 1 |
| Project management | 1 |
| Technology | 2 |
| Telecommunications | 2 |
| United Nations | 1 |
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