 |
| |||
| ядро сечения | |||
| центр поперечного сечения | |||
|
截面中心 : 5 phrases in 3 subjects |
| Construction | 2 |
| Technology | 2 |
| Water supply | 1 |
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