| |||
| 激光频率 | |||
|
laser frequency : 52 phrases in 14 subjects |
| Air defense | 2 |
| Automobiles | 1 |
| Aviation | 2 |
| Chemistry | 2 |
| Electronics | 13 |
| Geophysics | 2 |
| Information technology | 1 |
| Nuclear physics | 1 |
| Physics | 1 |
| Scientific | 1 |
| Space | 5 |
| Technology | 19 |
| Telecommunications | 1 |
| Textile industry | 1 |