| 单词 | 火山灰 |
| 释义 | 〔tephra〕Solid matter that is ejected into the air by an erupting volcano.火山灰：火山爆发时喷发到空气中的固体物质〔pozzuolana〕A siliceous volcanic ash used to produce hydraulic cement.火山灰水泥，火山石：用来生产水硬水泥的含硅火山灰〔tuff〕A rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel. Also called tufa 凝灰岩：致密火山灰构成的岩石，大小以细粒至粗砾石不等 也作 tufa〔upcast〕upcast volcanic ash.向上喷出的火山灰〔vomit〕a volcano that vomited lava and ash.喷出岩浆和火山灰的火山〔pozzuolana〕Any of various artificially produced substances resembling pozzuolana ash.类似的人造白榴火山灰：任何人工制造的，相似于白榴火山灰的物质〔stratovolcano〕A volcano composed of alternating layers of lava and ash.成层火山：由分层的岩浆和火山灰构成的火山〔bentonite〕An absorbent aluminum silicate clay formed from volcanic ash and used in various adhesives, cements, and ceramic fillers.膨润土，斑脱土：由火山灰形成的一种具有吸附能力的铝硅酸盐粘土，用于各种粘合剂、水泥和陶瓷填料〔Pinatubo〕A volcano, 1,699 m (5,771 ft) high, of the Philippines, in the west-central part of Luzon Island northwest of Manila. It erupted catastrophically in June 1991 after 600 years of dormancy, killing hundreds of people and burying hundreds of square miles under volcanic ash.宾纳杜部火山：菲律宾的火山，位于马尼拉西北部的吕宋岛中西部，海拔1,699米（5,771英尺）。在休眠600年后于1991年灾难性地喷发，数百人死于这次火山喷发并有数百平方英里的土地被火山灰覆盖 |
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