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- 雜質元素Siimpurity element Si
- 本文研究了用微波消化試樣，ICP－AES法同時測定分子篩及擔體中的主含量元素Si、Al和雜質元素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
- 雜質impurity
- 計算元素Si、O、C、H的彈性散射截面和散射角,與修正前的計算結果進行比較,結果表明,當電子能量達到100keV時,其相對論效應已經很明顯。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.
- 雜質元素impurity element
- 元素的elementary
- 本文用Raman譜特徵和Raman峰強度的變化,揭示摻氧多晶硅(SIPOS)的微結構:對於各種氧含量(從8%到38%)的SIPOS生長膜是一種無序結構,其中元素Si呈無定形相.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.
- 機械雜質mechanical impurity
- 元素周期表periodic system of elements
- 稀土元素lanthanon
- 雜質含量impurity content
- 金屬元素tantalum
- 放射性元素radioelement
- 雜質元素Feimpurity iron
- 元素分析elementary analysis
- 多元素multielement
- 營養元素nutritive element
- 他是鐳元素的發現者。He was the discoverer of the element radium.
