“high precision ultrasonic borehole imaging technology”的概念、定义、翻译、参考文献-科学参考

单词	high precision ultrasonic borehole imaging technology
释义	high precision ultrasonic borehole imaging technology Encyclopedia 工学工程数字化勘测技术释 high precision ultrasonic borehole imaging technology高精度超声波钻孔成像技术以孔内探头发出的超声波为信号源，向下发射脉冲超声波信号，信号经倾斜45°放置的凹面镜聚焦反射、改变方向。并垂直入射孔壁，信号经孔壁反射，被探头接收形成一个像点，如此经360°扫描后形成在某一个深度孔壁一周的图像成像技术。
随便看	warp insertion and weft insertion in weft knitting warp knitted axial fabric warp knitted bed-curtain warp knitted carpet warp knitted coral velvet warp knitted co-we-nit fabric warp knitted curtain warp knitted elastic bandage warp knitted elastic cloth warp knitted elastic fabric warp knitted fabric warp knitted fabric take-up and batched device warp knitted fishing net warp-knitted flannel warp knitted forming shoes warp knitted geotextiles warp knitted gold velvet warp knitted high-pile fabric warp knitted lamp-box fabric warp knitted mattress warp knitted mesh warp knitted packing bag warp knitted pile fabric warp knitted plaited fabric warp knitted power-net

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