... 化学武器防护 chemical weapon defense 火山灰物质 volcanic materials 抗甲腺物质 antithyroid substances ...
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可怕的火山灰可能对喷气式发动机造成威胁，过去当发动机遇到类似的火山灰物质时，引擎就会突然停转。
That fine volcanic ash could pose a risk to jet engines, which have cut out in the past after exposure to similar volcanic material.
无论是灰烬还是岩石，所有因火山爆发而形成的碎片状物质都称作火山灰。
Tephra is any fragmented material produced by a volcanic eruption, be it ash or rock.
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。
Any of various artificially produced substances resembling pozzuolana ash.
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