火山灰

The poozzolanic effect of fly ash on shape looks and function of the Calcium aluminite,Which is the cement hydrated product,is also introduced.

粉煤灰火山灰效应对水化产物钙矾石形貌和性能会产生影响。

Blast furnace slags were partially replaced by artificial and natural pozzolanic materials, such as pozzolan , fly ash and zeolite,to produce alkali activated slag cement(AASC).

用人工和天然火山灰质材料(如火山灰、粉煤灰和沸石)替代部分高炉矿渣制造碱矿渣水泥。

The alabandite and getchellite of hydrothermal origin, cement anatase of alkaline volcanic origin, and the high content of chlorite in coal were fist found in coals.

在西南地区晚二叠世煤中首次发现了热液成因锰矿和砷锑矿、碱性火山灰成因胶态锐钛矿和陆源碎屑成因斜绿泥石。

Scientists on Wednesday raised the alert level for Anak Krakatoa and Tangkuban Prahu -- which regularly spew gas and rumble -- from "normal" to "warning," the middle of three alert levels.

上周三，科学家们将喀拉喀托火山和唐库班珀拉胡火山警戒度由“正常”提高到“警告”，三级警戒中间等级，因为这两座火山近来定期喷出火山灰，并发出声音。

In March 2007 a mud flow, or "lahar" flowed down the side of the mountain after the crater lake overflowed, and large eruptions in 1995 and 1996 blanketed the surrounding area in ash.

二00七年三月，鲁阿佩胡火山口湖溢出，造成火山泥流。一九九五年和一九九六年激烈爆发，使周边地区完全被火山灰掩盖。