“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。
随便看	principal-axis transformation principal band principal base principal bending moment principal block principal branch principal bronchus principal bundle principal bundle connection principal category principal cell principal character principal circle principal class principal coefficient of contraction principal cohomology class principal coincidence curve principal component principal component analysis principal component analysis and singular value decomposition principal component analysis (PCA) principal component analysis, PCA principal component analysis,PCA principal component clustering principal component discrimination

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