 |
| |||
| normal surface | |||
| 正交面: 48 phrases in 13 subjects |
| Automobiles | 3 |
| Bridge construction | 8 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 4 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 24 |
|
| |||
| normal surface | |||
| 正交面: 48 phrases in 13 subjects |
| Automobiles | 3 |
| Bridge construction | 8 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 4 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 24 |