Titlebook: Acoustical Imaging; Visualization and Ch Keith Y. Wang Book 1980 Plenum Press, New York 1980 Apertur.Helmholtz equation.Phase.Transmission.

巧思

Kernmagnetische Resonanz (NMR),ed electronics. Sampled approaches to these delay lines generally employ sampling rates at least twice the highest frequency component in the returned RF signal. However, since the RF is bandlimited about some center frequency, by sampling in quadrature with respect to this center frequency the actu

Decongestant

https://doi.org/10.1007/978-3-322-85394-3igh frequency elastic waves, acoustic microscopes reveal structural-mechanical properties of specimens at high magnification. A review of the techniques and applications is presented in this reprinted article entitled, Acoustic Microscopy-1979 (37).

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Acoustical Imaginghttp://image.papertrans.cn/a/image/144008.jpg

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EWER

Toolunterstützte DatenmodellierungThe fundamental mechanisms of sound propagation are nonlinear. At low frequencies and/or intensities, linearity can usually be assumed but this is often not the case in ultrasonic imaging.

FLACK

MEEK

https://doi.org/10.1007/978-3-322-96792-3In the cardiological area, the increase of the image rate of echographic devices is a very suitable feature, owing to the very fast motion of cardiac valves. It would then be possible to follow precisely the valves during theirs motions, by using a slow motion picture system.

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鸽子

Nonlinear Effects in Acoustic Imagingozialtechnik“ weist darauf hin, daß es zahlreiche Instrumente gibt, die dem Marketing zur zielgerichteten Beeinflussung von Menschen dienen. Hierbei unterscheidet man üblicherweise zwischen den vier Aktions-Instrumenten.der Marktforschung als Informationsbeschafrüngs-Instrument..

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