| |||
| 成层材料 | |||
|
layer composite : 7 phrases in 5 subjects |
| Metallurgy | 3 |
| Plastics | 1 |
| Rail transport | 1 |
| Technology | 1 |
| Textile industry | 1 |
| |||
| 成层材料 | |||
|
layer composite : 7 phrases in 5 subjects |
| Metallurgy | 3 |
| Plastics | 1 |
| Rail transport | 1 |
| Technology | 1 |
| Textile industry | 1 |