She derived another formula relating the number of folds possible in one direction (n) to the minimum possible length of material (l) and the material's thickness (t)
她推导出了另一个关于折叠次数(n)、现实的最小长度(l)以及材料厚度(t)的关系式。
Rutherford backscattering spectrometry (RBS) demonstrates that the concentration of Fe or N atoms varies gradually from the substrate to the surface through the whole thickness of the films.
卢瑟福背散射分析结果表明,铁、氮两种原子的密度沿膜厚度方向呈梯度变化。
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