Excavating is to confirm the result of detection to buried pipeline coating, and to evaluate the tools of each kind of indirectdetection.
埋地管道开挖是为了验证外防腐层检测结果的准确性，是对各种间接检测工具的最好评价。
2
The self-stress detection methods of concrete-filled steel tube structures are summed up as direct detection method, analysis of calculation method and indirectdetection method.
钢管混凝土结构自预应力的检测方法可归纳为直接测试法、计算分析法和间接测试法三种。
3
Theoretical analysis and indirectdetection indicated that the pollen contamination rate of this pollination technique was no higher than 1%. But there is no evidence from direct detection by now.