证实
发表于 2025-3-24 13:23:45
Wolfram Klosterhuber,Jörg Heiningeld of the first experimental sonar transducers, in 1918.. It was this observation that has apparently motivated the speculation on the use of ultrasonic waves as a therapeutic agent in medicine. Since there was, at that time, another kind of wave therapy, radiofrequency diathermy, already in use, w
Exterior
发表于 2025-3-24 15:24:08
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legacy
发表于 2025-3-24 20:23:46
Matthis Grenzer,Ines Meyer,Heidi Schuster,Tobias Gebelasonic images (the other being the electron-beam scanning tube of Sokolov). It is certainly the most easily demonstrated. In the early versions. demonstrated by Töpler and Sokolov, an ultrasonic image field focused onto the liquid surface causes the surface to elevate at each point until equilibrium
GIDDY
发表于 2025-3-25 00:10:10
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揭穿真相
发表于 2025-3-25 07:14:45
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宽大
发表于 2025-3-25 09:47:32
Ger Snijkers,Alexia Meyermannrent sources. Also, several propagation characteristics have been determined. However, in view of the numerous sources, the background noise, and the propagation paths, with the complexity of two temperature channels and three wind currents, it is still far from being a field of applied science unde
Adulate
发表于 2025-3-25 12:07:55
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Osteoporosis
发表于 2025-3-25 19:12:46
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fulmination
发表于 2025-3-25 23:08:43
Udo Kelle,Bettina Langfeldt,Florian Reith transformation of the spatial distribution of wave intensity, which is the object to be reconstructed as the image, into temporal information by using a rotating random phase disk placed just behind the object and the analyses of the signal detected by a fixed receiver placed far from the disk. It
Conflagration
发表于 2025-3-26 02:30:53
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