“the London coal smog event”的概念、定义、翻译、参考文献-科学参考

单词	the London coal smog event
释义	the London coal smog event Encyclopedia 工学〔事件和活动〕释 the London coal smog event伦敦烟雾事件英国伦敦1952年12月5～9日由于低温天气使燃煤产生的烟雾（SO2）不断积累且无法得到有效扩散，造成死亡人数约4000人的事件。
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