B-Scan transducers are used to create an ultrasonic two-dimensional cross section view.
医用B超换能器用于产生二维超声截面图。
The surface morphology and section view of Al substrate in different conditions and Cr deposition were observed by SEM.
利用扫描电镜（SEM）及背散射电子像，观察了不同条件下基体与铬镀层的表面及断面形貌。
The surface morphology and section view of Al substrate in different conditions and Cr deposition were observed by SEM.
利用扫描电镜（SEM）及背散射电子像，观察了不同条件下基体与铬镀层的表面及断面形貌。
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