 |
| |||
| ultrasonic microphone | |||
|
超声波传声器 : 10 phrases in 5 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Technology | 4 |
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