fo2 saan1 baau3 faat3 zi2 sou3火山爆发指数
Jyutpingfo2 saan1 baau3 faat3 zi2 sou3
Yalefó sān bau fat jí sou

Definition

volcanic explosivity index (VEI)

Tone guide

T1High level
T2High rising
T3Mid level
T4Low falling
T5Low rising
T6Low level

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Dictionary data from CC-Canto and CC-CEDICT, licensed under CC BY-SA 3.0.