The image reconstruction problem of linear attenuationcoefficients is very difficult and central in transmission TGS.
在TGS透射测量中，线性衰减系数值的图像重建问题是TGS的难点和核心问题。
2
This paper describes the measurement procedure of ultrasonic attenuationcoefficients 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。
3
The assumption of equal signal and pump attenuationcoefficients is no longer required, while the iteration step-size can be significantly enlarged even under saturated amplification.