Introduces the constitutes of low voltage protection system of distributing transformer, analyzes the failure reason, puts forward concrete measures of improving low voltage protective reliability.
介绍了配电变压器低压保护的组成，对故障原因进行了分析，提出了提高低压保护可靠性的具体措施。
2
The free chloride concentration distributing in concrete of simulant chloride environment is analyzed, that is chloride diffusion behavior.
分析了模拟氯盐环境中混凝土内部的自由氯离子浓度分布规律，即氯离子的扩散行为。
3
With Ultrasonic ct technology (UCT), we can gain velocity distributing, identify location and dimension of abnormal concrete regions, conclude the type of defect and the intensity of defect.