acid volcanic glass
酸性火山玻璃岩
An agglomerate is a volcanic breccia.
集块岩是一种火山性角砾石。
after a volcanic eruption is bacteria.
火山喷发后的细菌。
Volcanic ash, lapilli, block and bombs.
火山灰、火山砾、火山块和火山弹。
A volcanic rock containing many amygdules.
杏仁岩有很多杏仁状小气孔的火成岩
combination rock body in volcanic rock area
火山岩杂岩体
Test flights show no damage by volcanic ash.
试航显示火山灰不会影响飞机发动机工作。
There they cool and harden into volcanic ash.
然后在空中它们又冷却变成火山灰。
This is unlike volcanic activity above the sea.
这同高出洋面的火山活动是不同的。
Volcanic activity formed seamount and sea bill.
火山作用形成海山，海丘。
Volcanic earthquakes often happen in this area.
这片地区经常会发生火山地震。
The phenomena associated with volcanic activity.
火山现象与火山活动有关的现象
Volcanic rock includes the volcanic glass obsidian.
火山岩包括黑曜岩火山玻璃。
A raising of the land resulting from volcanic activity.
火山活动导致的陆地上升。
Resembling a volcanic rock that contains many amygdules.
杏仁岩的类似包含杏仁孔的火成岩的
Study on volcanic ash reactivity of coal cinder at about
低温煤渣火山灰活性的机理研究
Volcanic ash silted up the Columbia River 35 miles away.
火山灰淤积在哥伦比亚河中长达35英里。
intermediate acidity volcanic rock in Upper Carboniferous
晚石炭世中酸性火山岩
a siliceous volcanic ash used to produce hydraulic cement
用来生产硬水泥的含硅火山灰
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
Volcanic ash showered down on the town after the eruption.
火山喷发后, 小城落了一层火山灰。
NASAs Mars Rover Finds Evidence of Ancient Volcanic Explosion
古代火山大爆发
Coal beds and volcanic ash falls are examples of marker beds.
煤层和火山灰堆是典型的标志层。
They ignored the erosion of the mountain by the volcanic ash!
他们忽视了山体被火山灰腐蚀的迹象！
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