 |
| |||
| single thread spiral | |||
| single-wire helix (丝) | |||
|
单线螺旋 : 3 phrases in 3 subjects |
| Plastics | 1 |
| Technology | 1 |
| Wind Energy | 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