acoustic shadow

In the ultrasonogram, we found that the metal and glass foreign bodies were followed by acoustic tails, and the rest of non-metal were followed by acoustic shadow.

在金属和玻璃类异物之后为声尾，其余非金属类异物之后为声影。

Qualitative inversion method was proposed to realize computer processing of defect identification by acoustic shadow overlapping method.

提出了定性反演方法，实现声阴影重叠法判别缺陷的计算机处理。

Results Ultrasound characteristics of TM in teenagers were found similar to adult TM. Unique diffused and bilateral minute echogenic lesions, smaller than 2 mm, no acoustic shadow, were scattered within testicular parenchyma.

结果青少年TM超声表现与成人相同，都表现为双侧睾丸内弥漫、散在、对称的直径在2mm左右的无声影小光点。

This paper tries to discuss the design intension of the master work, through the reading of the work's place, acoustic, shade and shadow, religious metaphor etc, and to move our inspiration of design.

本文通过对作品的场所、声学、光影、空间、宗教隐喻等方面的解读，探讨作品的设计内涵，试图给今天的建筑师们以新的启示。

Results: 1 The US appearance of breast cancer: Round or irregular mass with spiculated border, angled border, posterior acoustic shadow, minim calcified dots, rich blood flooding and irregular blood flooding, Etc.

。结果：（1）乳腺癌的超声表现：不规则形或圆形，纵横比1，边缘毛刺，边缘成角，后方声影，微小钙化，较丰富血流、不规则血流。