| 1. | The five detection steps include to defect the horizontal positions , to detect the entire defect , to detect the defect depth and quantity in vertical section , to detect the whole defect , and to analyze etc 共有五个步骤,包括方位判别、完全缺损判断、垂直剖面下之缺损位置与缺损?判断、整体缺损?判断、综合研判等。 |