 |
| |||
| X-ray quality | |||
| 射线特性: 18 phrases in 8 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Communications | 1 |
| General | 1 |
| Metallurgy | 4 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 7 |
|
| |||
| X-ray quality | |||
| 射线特性: 18 phrases in 8 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Communications | 1 |
| General | 1 |
| Metallurgy | 4 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 7 |