The thesis includes velocity structure tomography and attenuation structure tomography.
本论文包括速度结构层析成像和衰减结构层析成像。
This paper describes the measurement procedure of ultrasonic attenuation coefficients and ultrasonic velocity tomography.
本文对超声衰减系数和超声声速断层成像的测量过程进行了描述。
For the empirical beam hardening correction in computerized tomography (ct), it is necessary to measure an attenuation curve for the material.
传统的射束硬化校正方法，通常需要针对每一种材料测量该材料对射线的吸收曲线。
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