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

粉煤灰的火山灰效应对水化产物钙矾石的形貌性能会产生影响。

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).

用人工天然火山灰质材料(如火山灰、粉煤灰沸石)替代部分高炉渣制造碱渣水。

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.

西南地区晚二叠世煤中首次发现了热液成因的锰砷锑、碱性火山灰成因的胶态锐钛源碎屑成因的斜绿石。

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唐库班珀拉胡火山的警戒度由“正常”提高到“警告”，三级警戒的中间等级，因为这两座火山近来定期喷出火山灰，并发出隆隆的声音。

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，鲁阿佩胡的火山口湖溢出，造成火山流。一九九五年一九九六年的激烈爆发，使周边地区完全被火山灰掩盖。