表面深度测量
Measurement of surface deepth
磁异常梯度测深
magnetic anomaly gradient depth sounding
钢表层硬化深度测定法
measuring case depth for steel
钢的表层硬化深度测定法
measuring case depth for steel
高精度深度记录仪
high-precision depth recorder
高精度速度-深度建模
high-precision depth-velocity estimation
极远震深度测定
depth determination of farthermost earthquake
径向探测深度
radial investigation depth
radial depth of investigation