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- Upcast volcanic ash. 向上喷出的火山灰
- There they cool and harden into volcanic ash. 然后在空中它们又冷却变成火山灰。
- Volcanic ash, lapilli, block and bombs. 火山灰、火山砾、火山块和火山弹。
- 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 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
- Mounds of pumice and volcanic ash mark its center, where the volcano remains. 浮石和火山灰的土墩标志着它的中心，是火山的遗迹。
- Volcanic ash;the source material for Ordovician chamosite ooids in Sweden[J]. 1地址错了，不好意思，改成Sturesson U.
- Most were carved from compressed volcanic ash between 1400 and 1600 AD. 其中多数是在公元前1400-1600年由压缩的火山灰切刻而成。
- A rock composed of compacted volcanic ash varying in size from fine sand to coarse gravel. 凝灰岩致密火山灰构成的岩石，大小以细粒至粗砾石不等
- Volcanic ash filled the sky, blotted out the sun, and triggered hail and lightning. 天空充满了火山灰，遮盖了太阳，触发了冰雹和闪电。
- A heavy layer of volcanic ash rained down over the Aegean, covering islands and crops. 浓厚的火山灰层大量降下到爱琴海，遮盖了岛屿和农作物。
- The year after its eruption in 1980, spruce seedlings were coming up in the volcanic ash on Mt. St. Helens. 1980年圣海伦火山爆发之后，仅过一年，云杉幼苗就在火山灰上生长起来了。
- 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
- 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
- Characteristics or zero point of charge of volcanic ash soils in Changbaishan and Wudalianchi. 长白山和五大连池火山灰土壤电荷零点特性
- The earthquake brought an ancient city to light that had been buried under volcanic ash for thousands of years. 这场地震让一座古城重见光明，这座城池已经深埋在火山灰下数千年了。
- In terms of industrial type,burnt stone is a burnt clay mixed material of artificial volcanic ash. 工业类型为人工火山灰质烧粘土混合材。
- According to the radiation-optical quality of volcanic ash we calculated the parameter of radiation-optic. 本文根据火山灰粒子的辐射光学特性,计算了火山灰粒子和平流层本底的辐射光学参数。
- They were in Beacon valley, a boulder filled area between glaciers, collecting volcanic ash from a seven-foot deep, V-shaped fissure in rock. 在布满巨石的灯塔峡，他们从一个7深英尺的V型岩石裂缝中采集了火山灰。
- But in the days that followed, volcanic ash covered some settlements, and defoliated the island. 但在随后的日子，火山灰遮盖了一些居住地，使内陆沉没。
