“ash fall”的概念、定义、翻译、参考文献-科学参考

单词	ash fall
释义	ash fall [`ash ´fȯl] ^GEOLOGY 1. A fall of airborne volcanic ash from an eruption cloud; characteristic of Vulcanian eruptions. Also known as ash shower. 2. Volcanic ash resulting from an ash fall and lying on the ground surface.
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