 |
| |||
| 单级的; 一级〔直接〕的 | |||
| 灯光单级的 | |||
| |||
| 单级; 个别能级 | |||
| |||
| 单一能级 | |||
| single-level: 38 phrases in 13 subjects |
| Agriculture | 1 |
| Bridge construction | 1 |
| Business | 1 |
| Electronics | 6 |
| Geophysics | 1 |
| Gymnastics | 2 |
| Information technology | 4 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 4 |
| Technology | 13 |
| Textile industry | 1 |
| Water resources | 1 |