地壳含量

Fe在地壳中含量丰富，通常以各种Fe（III）氧化物的形式存在。

Iron presents in abundance as variety of Fe ( III ) oxides in crust .

半导体金属硅化物热电材料Mg2Si以其组成元素在地壳中含量丰富，且对环境无毒无污染，近十年来受到了人们的广泛关注。

Semiconducting metal silicide of Mg_2Si , which is composed of less toxic and naturally abundant elements , has attracted more attention for its potential application to thermoelectric device since the last decade .

这些红色的矿物就是长石，长石是地壳中含量最多的矿物。

These minerals are known as feldspar which is the most abundant mineral in the earth 's crust .

铁是地壳中含量最多的元素之一，同时它也是氧化还原性很强的活泼金属。

Iron is one of the largest elements in the earths crust as well as it is highly active metals .

金属材料由于理化性质优良、地壳中含量丰富且易加工成型而得到了广泛的应用。

Metal has been widely used because of their excellent physical and chemical properties , abundance in the crust and easy processing .

在众多的环境治理方法中，铁作为地壳中含量最丰富的金属元素之一，在环境催化领域发挥了不可替代的作用。

Among the treatment of environmental pollution , as one of the most abundant metal element , iron plays a very important role in the field of environmental catalysis .

钛是地球上广泛存在的元素，其藏量占第九位最丰，在地壳中的含量约为6g（TiO2）·kg~（-1）。

Titanium is the ninth richer element in the earth , its average content of titanium is 6 g ( TiO_2 )· kg ~ ( - 1 ) in the earth crust .

不同功能区降尘中地壳元素绝对含量均较高，为主要的成分，而一些污染元素（Cu、Zn、Pb、Ni、As）的含量在工业混合区和钢铁工业区则相对较高。

The absolute content of crustal elements in dust-fall of different zones were all higher , being the main component , but heavy metal elements such as Cu , Zn , Pb , Ni and As were relatively much higher in industrial zone and the mixed industrial and residential zone .

人们已经论证了地壳中元素含量在空间分布上是分形的。

The spatial fractal distribution of the earth 's crust element content has been proved .

分形布朗运动与地球化学测量&地壳中元素含量空间分布的定量表征

Fractal Brownian Motion and Geochemical Survey & A Fractal Approach to the Spatial Distribution of Element Contents in the Crust

以上特征表明这些矿物是石英，石英矿物分布广泛，在地壳中的含量仅次于长石。

These characteristics indicate that they are quartz which is a widespread and the second-most abundant mineral in the earth 's crust .

钼是自然界分布很少的一种元素，它在地壳中的含量平均为0.001%左右。

Molybdenum is a kind of metals with rare distribution in nature . Its content is only 0.001 % in the earth .

铼是一种稀散金属，在地壳中的含量约为7×10-8%，有效回收铼具有重要意义。

Rhenium is a kind of rare metal with its content in the earth shell only at about 7 × 10-8 % , so it is very meaningful to recover it .

这表明，与元素迁移聚集有关的成矿作用是混沌的，并由此导致了地壳中元素含量、矿床储量及其空间分布具分形结构。

This shows that the mineralization related with the migration and enrichment of elements is chaos , and thus resulting in the fractal structure of the element content , the ore reserves and their spatial distribution in the crust .

煤中U和Ga的含量均低于地壳中的平均含量，只有Ge含量略高于地壳中的平均含量。

The content of U and Ga is lower than that in earth crust , and only the content of Ge is higher than the mean value in earth crust .