| 摘要 |
<p>Ultrasonic speed transformer comprises a stepped concentrator (1, 2) with a resonant length according to the mode of longitudinal oscillation, with its narrow end rigidly connected to means for increasing the radiation surface area of the concentrator of the concentrator, in the form of a rod (3) of resonant length according to the mode of longitudinal oscillation. The rod may consist of a divergent section (5) with a length of 1n N/k, where N is the square root of the area ratio of the wide and narrow ends of the divergent section and k is the wave number, and a constant dia. section (3). The areas of the narrow and wide ends of the divergent section and of the narrow end of the concentrator or constant-dia. section are equal.</p> |
