 |
| |||
| 分层制法，铺筑的; 叠层的 | |||
| layer-built: 11 phrases in 5 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Electronics | 1 |
| Metallurgy | 2 |
| Technology | 5 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips