1.
Use of Natural Pozzuolanic Admixture in Construction of Hydropower Projects
天然火山灰掺合料在水电工程中的应用
2.
LAB. STUDY OF A NEW CEMENT SLURRY WITH LOW DENSITY FROM NATURAL VOLCANIC ASH
一种新型天然类火山灰低密度水泥浆的实验研究
3.
There they cool and harden into volcanic ash.
然后在空中它们又冷却变成火山灰。
4.
On24 th August AD79, the volcano erupted and lava, ash and rocks poured out of it onto the surrounding countryside.
公元79年8月24日，该火山突然爆发，熔岩、火山灰和岩石从火山口喷射到周边的乡村。
5.
A Study on the Natural Regeneration of Pinus Densata Forest Burned Areas in Western Sichuan Province, China;
川西高山松林火烧迹地天然更新研究
6.
portland-pozzolana cement
火山灰质硅酸盐水泥
7.
A volcano belches smoke and ashes.
火山喷出黑烟和灰土。
8.
ash that was thrown By an erupting volcano.
火山爆发喷到空中的灰
9.
The volcano ejected lava and ashes .
火山喷出熔岩和灰。
10.
The village was overwhelmed by ash from the volcano.
村子被火山灰覆盖。
11.
A volcano emits smoke and ashes.
火山散发着烟和灰。
12.
volcanic ash and lava build the mountains that we call volcanoes.
火山灰和火山岩在喷射口堆积构成了火山。
13.
Dense clouds of ash were generated during the volcanic eruption.
火山爆发时, 产生了浓密的火山灰云。
14.
A volcano that vomited lava and ash.
喷出岩浆和火山灰的火山
15.
Lava and ashes erupted from the volcano
熔岩和火山灰从火山中喷出来。
16.
The volcano erupted lava and ashes
火山喷射出熔岩和火山灰。
17.
For hundreds of kilometers around the eruption and for perhaps days or weeks, pale-gray ash would fall like clumps of snow.
喷发处方圆数百公里内，连续数天或数星期，浅灰色的火山灰会一团团像雪一样从天空飘下。
18.
At least 3,600 people were killed by the unexpected and fast ash fall.
火山灰降临得太突然而且速度非常快，导致了至少3600人死亡。