 |
| |||
| acousto ultrasonic-echo technique (patented by Hatch Ltd – сокр. AU-E Nik-On/Off); AU-E technique (patented by Hatch Ltd Nik-On/Off) | |||
|
| |||
| acousto ultrasonic-echo technique (patented by Hatch Ltd – сокр. AU-E Nik-On/Off); AU-E technique (patented by Hatch Ltd Nik-On/Off) | |||