echo sign
英 [ˈekəʊ saɪn]
美 [ˈekoʊ saɪn]
回声征；回波标记
双语例句
- Radar echo frequency spectrum estimation based on α stable distribution covariation Application of Changing Chirp Rate Sign in Eliminating Range Blur of SAR
基于α稳定分布自共变的雷达回波频率谱估计变线性调频斜率符号在合成孔径雷达中的应用 - In the radar echo images the squall line showed herringbone or bow, bull's-eye structure and the main front was associated with thin ribbon weak echo which was the sign of the emergence of gale.
在雷达回波图上呈人字形或弧形，有“牛眼”结构，主回波前缘有细长带状弱回波是出现大风的征兆； - We believe that SEC is a common pathological echo phenomenon in left atrium of patient with mitral stenosis. It might be due to the increased diastolic or systolic over-loading of the left atrium, but not necessarily be the sign of left atrium thrombosis.
结论是，左心房SEC现象为二尖瓣狭窄患者中常见病理性超声现象，其存在提示左心房容量或压力负荷增加，但并不一定表示左心房内附壁血栓的存在。