pyroclastic fall [ˌpaɪərəʊˈklæstɪkˌfɔːl] 名词
- pyroclastic fall
- Auswurfmaterial
单语范例（未经PONS编辑处理）
All four minor grain types are widespread in the pyroclastic fall deposit and are not restricted to any one portion or extent.
en.wikipedia.org Another grain consisting of extremely rounded but glacially dissected quartz monzonite, are another small but widespread element of the pyroclastic fall deposit.
en.wikipedia.org Particles falling from the eruption clouds form layers on the ground (this is pyroclastic fall or tephra).
en.wikipedia.org The total area of recognisable pyroclastic fall was greater than 800,000 km.
en.wikipedia.org They can occur in welded pyroclastic fall deposits and in ignimbrites, which are the deposits of pumiceous pyroclastic density currents.
en.wikipedia.org