| 摘要 |
An ultrasonic emitter is made in the form of an elongated body of rotation around longitudinal axis which length is multiple of half wavelength of ultrasonic vibrations, consisting of a waveguide and a section for installing a converter. The waveguide has the shape of a hollow cylinder or hollow truncated cone coaxial to the longitudinal axis, with a thread made all along the waveguide on its outer and inner surfaces. The waveguide has through holes made in the radial direction relative to the longitudinal axis. |
