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如何进行电力拖动控制线路故障排除练习 被引量:2
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作者 张爱卿 《职业》 2015年第2期111-,共1页
电力拖动控制线路故障排除是维修电工必须掌握的基本知识和操作技能,是学习生产机械电气控制线路的基础。本文根据多年的实际教学经验,总结出三步快速故障排除方法。
关键词 电力拖动控制线路故障排除 原理图分析 故障分析 三步快速测量法
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Application of Ground Penitrating Radar Method in Pipe Laying Detection
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作者 史付生 赵学军 +2 位作者 宁书年 宋喜林 何亚伟 《Journal of China University of Mining and Technology》 2003年第1期84-87,共4页
Ground Penetrating Radar method was used in detecting the flaws of underground pipeline. The GPR layer disturbing image was summarized by using a rational method in fieldwork and the in-door interpretation of data. Th... Ground Penetrating Radar method was used in detecting the flaws of underground pipeline. The GPR layer disturbing image was summarized by using a rational method in fieldwork and the in-door interpretation of data. The mark radar images of disturbance of slight, middle, and strong were obtained. The result shows that the radar method can not only determine the position of the concrete pipeline underground, but it can detect the laying quality of pipeline as well. 展开更多
关键词 ground penetrating radar pipe laying quality detecting layer disturb
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