查询词典 volcanic ash

Clay particles resulting from volcanic ash weathering (allophane, imogolite and humus-Al complexes) have a very reactive surface.

火山灰风化形成的水铝萤石、伊利缟石和腐殖质-Al复合体粘土颗粒表面非常活跃。

Soils dominated by 2:1 clays(montmorillonite, vermiculite, illite), more frequently found in temperate zones, but also present in tropical and subtropical areas; behave different from the typical tropical red soils (Ultisols and Oxisols dominated by Fe and Al oxides and kaolinite) and from the soils developed from volcanic ash (Andisols dominated by allophane, imogolite, and humus-Al complexes) that are widely spread over the world.

我们常在温带地区发现的2：1型粘土矿物为主的土壤，也出现在热带和亚热带地区。这些土壤不同于世界范围内广泛分布的典型的热带红壤(以铁铝氧化物和高岭石为优势粘土矿物的老成土和氧化土)，也不同于由火山灰（以水铝萤石、伊利缟石和腐殖质-Al复合体为优势粘土矿物的火山灰土）发育的土壤。

The first type is different kinds of rocks including sedimentary rock, metamorphic rock and volcanic rock among which black mudstone, black shale, clay, slate, phyllite, granite, basalt, andesite and volcanic ash are the best except some chemically depositional rock such as salt rock, gypsum, limestone.

第一类是自然界各种不同类型的岩石，包括沉积岩、变质岩和火山岩，其中以黑色泥岩、黑色页岩、粘土、板岩、千枚岩、花岗岩、玄武岩、安山岩及火山灰为最佳，但不包括某些化学沉积岩，如盐岩、石膏、石灰岩。

The distribution pattern also indicate radiolarian concentrations are strongly affected by the sediment type, radiolarian abundance and diversity is higher in the clay or mud than in fine sand, silt or coarse sand and decrease with the increase of terrigenous material. There is direct correlation between the radiolarian preservation and the amount of volcanic glass, the numerous volcanic ash shards have a significant influence on the radiolarian distribution pattern.

沉积物类型特别是其粒度和陆源物质的含量极大地影响着放射虫的分布，放射虫的丰度和分异度明显地随沉积物粒度的增大和陆源物质含量的增加而减小；同时，放射虫的分布也显示了与沉积物中火山玻璃含量的密切相关性。

Volcanic ash in surface sediments around Zhongsha Islands of the South China Sea mainly include three kinds of volcanogenic detritus: that is, brown volcanic glass, colorless volcanic glass and volcanic scoria.

南海中沙近海表层沉积物的轻组分(粒径为63~125μm)中主要包括有褐色火山玻璃、无色火山玻璃以及火山渣等3种火山灰类型。

The varve was also well preserved in the sediment core of the Sihailongwan maar lake. Volcanic ash was recognized in the sediments of the Sihailongwan maar lake in the Longgang volcanic field of NE China. Volcanic ash studied is located in 70 cm below...

这一结果不仅表明天池火山历史时期大喷发的规模比原来估计的还要大，并且为建立千年以来四海龙湾沉积物及古气候演化的时间标尺提供了依据。

These things on the earth are actually all volcanic ash from volcanic eruptions.

地上的这些物质其实全部都是火山爆发时喷出的火山灰。

No long-term because of volcanic eruption, volcanic gradually weathered, with the deposition of volcanic ash and dust accumulation of mixed and formed a rich in potassium, phosphorus and other elements of the fertile soil, coupled with more rainfall here, the crater of a south-easterly direction there are gaps, and the sun can radio Income, so long played a lush forest.

由于火山长期没有喷发，火山岩逐渐风化，同火山灰及沉积的浮尘积聚混合，形成了富含钾、磷等元素的肥沃土壤，加上这里降水较多，火山口的东南方向有缺口，阳光可以射入，所以长起了郁郁葱葱的森林。

According to meteorological experts, the volcanic ash is composed of rocks, minerals, volcanic glass fragments of volcanic ash is different from the ash, it hard, insoluble in water ...

据气象专家介绍，火山灰，是由岩石、矿物、火山玻璃碎片组成，火山灰不同于烟灰，它坚硬、不溶于水。。。

Deposition can occur when sediments settle onto the surface of the Earth and later lithify into sedimentary rock, or when as volcanic material such as volcanic ash or lava flows, blanket the surface.

当沉积物聚集于地表，接着被岩化为沉积岩时，则可以产生沉淀，或者火山灰或熔岩流等火山物质覆盖地表时也挥发生。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐