机译:摄影测量法在使用DSLR相机在地下煤矿中进行肋骨特征测量的实际应用
Mining Engineer Ground Control Branch NI0SH, 0ffice of Mine Safety and Health Research, Pittsburgh, PA, USA;
Mining Engineer Ground Control Branch NI0SH, 0ffice of Mine Safety and Health Research, Pittsburgh, PA, USA;