The analysis of the virtual echo such as three -body scatter spike echo, the secondary echo, the side -lobe echo is given echo based on observational re cords of severe convectional weather in 2003.
根据2003年几次强对流天气的观测资料，对其中三体散射长钉、二次回波旁瓣回波等虚假回波进行了分析。
Ultrasonic manifestations of lesion were mostly low echo induced by not rich blood flow, especially in hepatic portal and left lobe.
病灶多表现为血流不丰富的低回声，尤以肝门部和肝左叶者明显。
Ultrasonic manifestations of lesion were mostly low echo induced by not rich blood flow, especially in hepatic portal and left lobe.
病灶多表现为血流不丰富的低回声，尤以肝门部和肝左叶者明显。
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