查询词典 volcanic rock

Agglomerates, green pyroclastic rock, ignimbrites and crystal the involcanic rocks tuffs are rich in SiO2 (74.98%~78.25%) and K2O (4.35%~7.25%); and poor in Al2O3 (10.32%~12.21%),∑FeO (1.07%~1.86%), CaO (0.30%~0.62%), Na2O (1.36%~2.07%), compared to the kind of volcanic rocks in Fujian and Zhejiang.

火山岩从基性到酸性均有分布，以酸性为主。与福建、浙江同类型火山岩相比，集块岩、绿色火山碎屑岩、熔结凝灰岩、熔结晶屑凝灰岩等均是富硅、钾w(SiO274.98%~78.25%、w(K2O)4.35%~7.25%，贫铝、铁、钙、钠w(Al2O310.32%~12.21%、w1.07%~1.86%、w0.30%~0.62%、w(Na2O)

Volcanologists frequently visit volcanoes, especially active ones, to observe volcanic eruptions, collect eruptive products including tephra, rock and lava samples.

火山学家经常去火山区，尤其是活火山，观察火山喷发，收集火山喷发碎屑、岩块和熔岩之类的喷发物。

According to the latest survey confirmed that the formation of this valley, in addition to a large area of strong magnetic Triassic basalt volcanic eruption in vitro, accompanied by more than 100 iron ore veins and quartz rock flash.

据最新勘察证实，这一谷地地层中，除有大面积三叠纪火山喷发的强磁性玄武岩体外，还伴有百多个铁矿脉及石英闪光岩体。

They were in Beacon valley, a boulder filled area between glaciers, collecting volcanic ash from a seven-foot deep, V-shaped fissure in rock.

在冰川之间的一个充满大圆石的beacon的山谷中他们从一块岩石的八英尺深V形裂隙中采集火山灰。

Already its hard to see what unites, say, a volcanic island off Iceland, Namibian rock paintings, and the Sydney Opera House.

它已经很难看到像冰岛附近的火山岛，纳米比亚的岩石画以及悉尼歌剧院这样的古迹群了。

Already it's hard to see what unites, say, a volcanic island off Iceland, Namibian rock paintings, and the Sydney Opera House.

它已经很难看到像冰岛附近的火山岛，纳米比亚的岩石画以及悉尼歌剧院这样的古迹群了。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。