And it is in spring that soil water content , soil organic matter and calcium and magnesium suffered more seriously damage from overgrazing 春季过度放牧对土壤表层的水分、有机质和钙、镁等元素造成的损失最为严重。
The factors that precursors mixed with li , co , ni , etc . influenced on composition , str ucture and properties of products were studied 本论文也研究了掺杂ni 、 co 、 li等元素的前驱体对离子交换产物的组成、结构和电性能的影响情况。
Of these applications , 9 were for educational projects , 5 were for research proposals , and 22 combined educational , promotional and training elements 其中9份申请为教育项目， 5份为研究项目， 22份为综合教育、推广及训练等元素的项目。
In another 100 million years or so , most of the gas and dust will have been used to form stars , or blown out of the galaxy , so the starburst will subside 人们认为，星系在狂暴的产星过程中外抛的物质是将碳、氧等元素洒遍宇宙的一大主要途径。
It will melt in a certain range of melting points , but it has no definite melting point . soft pitch has no thermal effect when solidified 沥青组分极为复杂，大多数为三环以上的芳香族烃类，还有含氧、氮和硫等元素的杂环化合物和少量高分子炭素物质。
Then , the spectra of al , si , s , ca and fe are measured in the edxrp system , from which it is certain that the purpose is reached basically 然后，用于能量色散x荧光分析系统中，测试了al 、 si 、 s 、 ca和fe等元素的能谱，证实基本达到了预期的目的。
It is one of the commonest of the 92 chemical elements of which the world is made , for only oxygen , silicon , and aluminium occur in greater abundance 它是构成这个世界的92种化学元素中最常见的几种元素之一,只有氧、硅、和铝等元素的含量远远超出于它。
The benchmarking utility developed for these tests uses an html parser to process web content , updating information about links , forms , tables , and so on 为这些测试开发的基准实用程序使用html解析器来处理web内容，更新有关链接、表单和表等元素的信息。
Soil geochemical measurement of one ten - thousandth scale indicates that the anomalies of gold , stiver , copper , lead have features of high intensity and well - lapped forms 1 ： 1万土壤地球化学测量表明矿区金、银、铜、铅、锌等元素具有强度大，套叠好的特点。
It is thought that the expulsion of matter from a galaxy during bursts of star formation is one of the main ways of spreading elements like carbon and oxygen throughout the universe 人们认为，星系在狂暴的产星过程中外抛的物质是将碳、氧等元素洒遍宇宙的一大主要途径。
