在深水地平线号出事前，那里已有40年未出现一起近海油井严重泄漏的事件。
Before Deepwater Horizon foundered there had not been a big leak from an offshore oil well for 40 years.
加速橡胶密封件老化变质，寿命缩短，甚至丧失其密封性能，使液压系统严重泄漏。
Acceleration rubber seal aging deterioration, loss of life, even loses its sealing property, causes the hydraulic system to divulge seriously.
报道了某核动力系统蒸汽发生器，因管束的应力腐蚀破裂而发生严重泄漏事故的原因和规律。
The reasons and regularity of pipe stress corrosion cracking of some nuclear-powered steam generator was summarized, which caused serious leaking accident.
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