The major cause was found through the investigation and analysis of the overvoltage accident, with preventive measures and lessons that should be drawn given.
通过一起过电压事故的调查分析，找出了发生事故的主要原因，并提出了整改措施及应吸取的经验教训。
It was found from the analysis and study of the corrosion failures of refinery storage tanks that the pitting corrosion was the major cause of the failure.
通过对炼油厂储罐腐蚀失效形式的调查分析，得出局部腐蚀是导致储罐失效的主要原因。
Further analysis indicated that external copper pollution was the major cause of the crack in the bent pipe.
进一步分析，认为外来铜污染是引起弯管开裂的主要原因。
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