| 摘要 |
1. Method for concentrating acoustic waves in liquid medium by transforming concentric acoustic surface wave into convergent front of acoustic longitudinal waves, characterised in that the acoustic surface wave is introduced onto profiled rotary surface submerged in liquid medium, whose profile is selected depending on length and aperture angle of the acoustic longitudinal waves focus.6. Device for concentrating acoustic waves in liquid medium comprising a ring-shaped transducer of acoustic surface waves, characterised in that the transducer (1) is coaxially fixed to the head (2) in a form of cylinder ending with profiled rotary surface submerged in liquid medium (3), the profile of rotary surface being dependent on the aperture angle and length of acoustic longitudinal waves focus reflected from that surface.<IMAGE>
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