短暂 发表于 2025-3-21 19:01:00

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殖民地 发表于 2025-3-21 23:43:43

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acheon 发表于 2025-3-22 04:14:15

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Presbycusis 发表于 2025-3-22 05:59:51

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严峻考验 发表于 2025-3-22 11:25:12

Agi Schründer-Lenzen,Stephan MückeAt the present time different methods of the linearized solution of inverse scattering problems are developed. In this paper theoretical methods and numerical algorithms using multiple scattering considerations are suggested for reconstruction of higher contrast acoustic refraction inhomogeneities.

暂时中止 发表于 2025-3-22 13:42:03

Katrin Hauenschild,Meike WulfmeyerWe have studied the application of the phonon focusing phenomenon, i.e. maximal flattening of the defined acoustical mode slowness surface, for purposes of acoustical microscopy.

Strength 发表于 2025-3-22 20:57:59

Die Reform des polnischen Zivilgesetzbuches,es as is the case in ultrasonics but rather use a very broad spectrum of phonon modes. This is most obvious in heat-pulse experiments where the frequency spectrum has a Planck-like shape which is in marked contrast to ultrasonics where only one phonon mode is occupied and the spectrum is a delta-fun

kidney 发表于 2025-3-22 23:48:51

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Commonwealth 发表于 2025-3-23 03:35:13

Agi Schründer-Lenzen,Stephan Mückeechniques all proceed from fundamental algorithms which are, essentially, the expression of the inverse (scattering) problem for the particular measurement configuration associated with that imaging technique. Even the more conventional pulse-echo techniques, widely used in medical applications, may

威胁你 发表于 2025-3-23 07:59:32

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查看完整版本: Titlebook: Acoustical Imaging; Helmut Ermert,Hans-Peter Harjes Book 1992 Springer Science+Business Media New York 1992 ASTER.Apertur.Sensor.computer.