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sample composition中文是什么意思

  • 样品构成

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  • 例句与用法
  • The spectral lines emitted from these species can be used to determine the sample composition . the wavelengths observed are characteristic of the individual elements present in the sample , and their intensities are related to the concentration of the corresponding species in the sample
    高功率密度的激光使样品表面汽化,产生处于激发态的原子和离子,而激发态原子和离子的发射谱线可用于样品成分的鉴定,发射谱线的强度与该原子对应的元素在样品中的含量有关。
  • The sample composition was analyzed by means of tg and x - ray diffraction . the following conclusions can be drawn from the experiments : given conditions , the sample powder that has the same xrd data as the standard fetioa can be gotten when use any method mentioned above ; the key in synthesis is to avoid the oxidation of fe2 + , so the whole process should performed under vacuum or neutral atmosphere , samples used by this study were prepared under nitrogen atmosphere ; the heat - treated time and temperature have some influence on the sample powder , results show that the proper time and temperature is 120 minutes and 1100 respectively
    研究结果表明:在合适的反应条件下,用上述三种合成方法都能得到xrd数据与标准fetio _ 3物相基本吻合的粉体;合成反应需要克服的主要问题是防止体系中fe ~ ( 2 + )的氧化,因此,整个反应必须在真空或者非氧化性气体保护下进行,本研究需要的样品是在高纯从保护下合成的;煅烧的时间和温度对最终的产物也有一定的影响,研究发现:合理的煅烧时间和温度分别为120分钟和1100 。
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Last modified time:Mon, 18 Aug 2025 00:29:56 GMT

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