高温螺栓法兰连接系统的失效不仅会造成巨大的经济损失，而且还会污染环境，甚至酿成重要人员伤亡事故。
The failure of bolted flanged connections will lead to enormous economic loss, serious environment pollution and personal injury accidents at elevated temperature.
聚氨酯泡沫塑料是一种高分子合成材料，应用范围十分广泛，但聚氨酯泡沫塑料在火灾时能放出使人窒息死亡的毒气，特别是近年来已在一些场所造成重大的人员伤亡事故。
The urethane foams is a kind of high molecular synthetic material and can be used widely. But being burned, it can get out the poisonous gas and results in some accidents with heavy losses of lives.
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