Compared with the healthy side of the same patient, thickness and echo feature of the skin and subcutaneous tissue, the width and echo feature of the skin nerves were recorded.

均以同一患者健侧对应部位做对照，观察皮肤及皮下组织厚度、回声特征及皮神经的宽度、回声特征。

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Fixing the spectrum width of the weather echo signals, we change theirs mean Doppler frequency and filter them using regression filter. After filtering, we analyze the attenuation of them.

在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率，分析了回归滤波器对它的衰减情况。

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In bathymetric survey, the record seabed image is distorted due to the angular beam width of an echo sounder.

在海洋测深过程中，回声测深仪波束角效应使记录的测深图像失真。

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