Piece of black, volcanic glass.

To cause ( molten lava ) to pour forth from a volcanic vent.

使(岩浆等)喷出使 ( 熔岩 ) 流出火山口.

Geology To cause ( molten lava ) to pour forth from a volcanic vent.

使(岩浆等)喷出:使 ( 熔岩 ) 流出火山口.

Tile study shows that the volcaniclastic turbidite deposited in a passive continental margin.

该区的火山碎屑浊积岩形成于被动大陆边缘构造环境.

Gold deposits in the Pingxiang area are controlled by faults and hosted in acid volcanics.

凭祥地区金矿床受断层构造与酸性火山岩的双重控制.

Its petrochemical characteristics show that the volcanics was formed in oceanic island tectonic environment.

岩石化学特征表明火山岩形成于洋岛构造环境.

ReHeTai oil field has many oil-bearing strata, among them the volcanics is one the important reservoir.

热河台油田具有多套含油层系, 其中火山岩也是热河台油田的重要储层之一.

The volcanics are most commonly andesitic in composition.

火山岩的组成最通常是安山岩.

Pengxian deposit and the Masongling Formationformation are products of island arc volcanism in convergent plate boundary.

证据表明,马松岭组及其所赋存的铜矿床均为会聚性板块边界古火山岛弧的产物.

If active volcanism were responsible then it would be a major discovery with important implications.

如果活火山作用可信,那么这将是一项具有重要意义的重大发现.

Both kinds of plate boundary are associated with fault systems, earthquakes and volcanism.

两种板块边界均与地层系统 、 地震以及火山活动有关.

Many scientists still argue that volcanism is the more likely cause.

许多科学家仍然主张火山活动更可能是肇因,有些人认为宇宙尘是比富勒烯更可靠的撞击事件指标.

Flash heat, volcanism, lightning, wind, and waves all renew the material world.

快速加热 、 火山活动 、 闪电 、 风力以及海浪能够让物质世界焕然一新.

These events are associated with changes in ocean circulation, solar radiation and volcanism.

这些现象同海洋循环 、 太阳辐射以及火山活动有关.

The volcano erupted last year killing about 600 people...

去年那座火山喷发致使约600人遇难。

He is painting a huge volcano.

他正在画一座巨大的火山。

Wang gave up six hits and four walks, one intentionally, and struck out six.

王建民总共被击出六支安打,四个四坏球保送, 其中一个是故意四坏, 有六次三振.

The policemen who patrolled the big city slum area that summer were sitting on a volcano.

那年夏天,在城市大贫民区巡逻的警察如同置身于火山口上.

a dormant volcano (= one that is not active at present)

休眠火山

an extinct volcano (= one that is no longer active)

死火山

He has been able to tell us more about active volcanoes than any man alive.

他现在比任何人都能更多地向我们讲述有关活火山的情况.