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- 杂质元素Siimpurity element Si
- 本文研究了用微波消化试样，ICP－AES法同时测定分子筛及担体中的主含量元素Si、Al和杂质元素Fe、Na、Ca、Mg的方法。The method of simultaneous determination of main content elements (Si and Al) and impurity elements (Fe ,Na ,Ca and Mg)in zeolites and supports has been studied by using ICP AES technique. The samples were pretreated by microwave digestion.
- 元素element
- 杂质impurity
- 计算元素Si、O、C、H的弹性散射截面和散射角,与修正前的计算结果进行比较,结果表明,当电子能量达到100keV时,其相对论效应已经很明显。The elastic scattering cross-section and scattering angle of elements Si, O, C, H by relativistic Rutherford formula are calculated and the results are compared to that of non-relativistic Rutherford formula, which showed that the relativity effect is very clear in the case of 100 keV electron.
- 杂质元素impurity element
- 元素的elementary
- 本文用Raman谱特征和Raman峰强度的变化,揭示掺氧多晶硅(SIPOS)的微结构:对于各种氧含量(从8%到38%)的SIPOS生长膜是一种无序结构,其中元素Si呈无定形相.A Study on Raman characteristic spectrum and the intensity of Raman peak is given to pre-sent the microstructure of SIPOS film:The as-deposited films are amorphous and have amor-phous phase of si when its oxygen content changes from 8%25 to 38%25.
- 机械杂质mechanical impurity
- 元素周期表periodic system of elements
- 稀土元素lanthanon
- 杂质含量impurity content
- 金属元素tantalum
- 放射性元素radioelement
- 杂质元素Feimpurity iron
- 元素分析elementary analysis
- 多元素multielement
- 营养元素nutritive element
- 他是镭元素的发现者。He was the discoverer of the element radium.
