 |
| |||
| ground oyster shell; oyster shell whiting; shell powder | |||
| 贝壳 粉: 5 phrases in 3 subjects |
| General | 1 |
| Technology | 2 |
| Textile industry | 2 |
|
| |||
| ground oyster shell; oyster shell whiting; shell powder | |||
| 贝壳 粉: 5 phrases in 3 subjects |
| General | 1 |
| Technology | 2 |
| Textile industry | 2 |