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Sigma KEE - EFScaleAttribute
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改良藤田级数
EFScaleAttribute 是改良藤田级数的简称。这是根据一系列龙卷风所造成的损害， 估计首灾区的3秒阵风风速来表示一个 Tornado (龙卷风)的强度。级数最低的龙卷风为 EFO，它的阵风风速估计在 65 到 85 mph 之间， 而最强级别的 Tornades 是 EF5，阵风大于 GreaterThan 200 mph。
Relationships      
Parents 时速级数属性 SpeedScaleAttribute is a class of Attributes for indicating the speed of a Motion


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