 |
| |||
| cycle per second; cycles per second; Hertz | |||
| 每秒周数: 13 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Commerce | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Technology | 3 |
| Telecommunications | 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