熔岩流——熔浆 绳状熔岩 爬虫状熔岩 枕状熔岩 3．固体喷发物 火山碎屑物（pyroclast）： （1）火山灰（volcanic ash）：Φ<2mm. （2）火山砾（lapillus）: Φ=2-64mm.
基于7135个网页-相关网页
volcanic ash soil [地质] 火山灰土 ; 火山灰土壤
Volcanic ash for cleaning 清洗用火山灰 ; 清洁用火山灰
Volcanic Ash Advisory Center 火山灰咨询中心 ; 询中心 ; 火山灰谘询中心
Volcanic Ash Advisory Centre 火山灰谘询中心 ; 询中心 ; 欧洲火山灰谘询中心 ; 火山灰咨询中心
Volcanic Ash Advice Centre 火山灰建议中心
volcanic ash soils 火山灰土壤
volcanic ash deposit 火山灰堆积
At the same time X-ray diffractions of volcanic ash base with different ages were also conducted,and the reaction mechanism was analyzed according to test results.
同时对不同龄期的火山灰路面基层混合料进行XRD测试,结合测试结果分析火山灰稳定基层的反应机理。
参考来源 - 火山灰路面基层路用性能研究及机理分析·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Volcanic ash showered down on the town after the eruption.
火山喷发后，小城落了一层火山灰。
A cloud of volcanic ash is spreading across wide areas of the Philippines.
一大片火山灰正在向菲律宾的大块区域扩散。
The Romans observed that, when volcanic ash mixes with water and then cools, it gets extremely hard and almost impossible to break up.
罗马人观察到，当火山灰与水混合然后冷却，火山灰变得非常坚硬，几乎不可能分解。
The ancient Romans discovered that volcanic ash made better cement.
VOA: special.2009.12.01
And Flynn says the cloud is spreading. "The southern part of Europe is for the most part clear (OMITTED) but the volcanic ash cloud is anticipated to extend slightly further south and eastward during this night."
VOA: standard.2010.04.16
A volcanic eruption in Iceland sent a plume of ash into the atmosphere.
VOA: standard.2010.04.15
应用推荐