问到了烧瓶 发表于 2025-3-25 03:36:55
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http://reply.papertrans.cn/19/1873/187287/187287_25.pngcrease 发表于 2025-3-26 01:10:50
Nils Kaufmann,Andre Magner,Nils Neuber as the change of ., or . of a wave as a result of spatial or temporal nonuniformities of the medium. The inhomogeneities arise because of variations in compressibility or acoustic impedance differences. In this section, we almost exclusively treat scattering as a phenomenon of redirection of energyGleason-score 发表于 2025-3-26 06:23:11
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https://doi.org/10.1007/978-3-322-93641-7n medicine is echo or backscatter geometry. This has evolved because of the limited number of available windows into the body. Ultrasonic energy is stopped by bones and gas-filled cavities which can be found throughout the body. Therefore, medical instruments have evolved that transmit energy into aavarice 发表于 2025-3-26 16:17:45
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https://doi.org/10.1007/978-1-4613-9243-9classification; computed tomography (CT); imaging; tissue; tomography