搜尋結果
pyroclastic flow
- a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano and typically flowing at great speed.
noun: pyroclastic flow, plural noun: pyroclastic flows
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- IPA[ˌpīrōˈklastik flō]
- a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a ...
Oxford American Dictionary