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KB Term:
EFScaleAttribute
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。
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时速级数属性
SpeedScaleAttribute
is a class of
Attribute
s for indicating the speed of a
Motion
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