| 单词 | Hartmann generator |
| 释义 | Hartmann generator [`härt·mǝn ´jen·ǝ´rād·ǝr] ENGINEERING ACOUSTICS A device in which shock waves generated at the edges of a nozzle by a supersonic gas jet resonate with the opening of a small cylindrical pipe, placed opposite the nozzle, to produce powerful ultrasonic sound waves. |
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