attenuation ratio

The size, edge, shape, internal echo, mass drive aspect ratio, pone attenuation and blood flow condition of the lesions were recorded. The nature of the breast lesions was analysed and judged.

并记录病灶的大小、形态、边缘、内部回声、肿块纵横经之比、后方衰减及血流情况，并对其进行综合分析来评价病灶的良恶性。

Study on Best Comparability Ratio of Radix Rehmanniae with Radix Aristolochiae Fangchi for Attenuation of Toxicity The Best Combination of Effective Screening Component

生地对广防己减毒作用最佳配伍比例的研究参知健脑片有效组分的最佳配伍筛选

In this paper, a method named as the Difference Ratio Correction ( DRC) Method is proposed to estimate the acoustical attenuation in vivo using the video output of commercial B-scanners.

本文介绍了一种利用B超视频输出信号进行体内组织声衰减估计的方法&差比校正法。