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- STUDY ON THE NUMERICAL CALCULATION OF RELATIVE ATOMIC MASS 相对原子质量的数值计算研究
- The evolution for the basis of the relative atomic mass 相对原子质量基准的演变
- Uncertainty Analysis of Absolute Measurement of Isotopic Abundances and Relative Atomic Mass 同位素丰度绝对测量及相对原子质量测定中的不确定度评估
- Keywords Numerical calculation;Natural cubic interpolating splines;Relative atomic mass; 数值计算;自然三次样条内插函数;相对原子质量;
- Atomic weight(also relative atomic mass) ratio between the mass of one atom of an element and one-twelfth of the weight of an atom of carbon 原子量(某元素的一个原子的质量与十二分之一的碳原子量的比值).
- relative atomic massn. 〈化〉原子量
- A type of atom specified by its atomic number, atomic mass, and energy state, such as carbon 14. 核种由它的原子序数、原子量和能量状况具体确定的一种原子,如碳14。
- This postulate suggested a practical strategy for determining relative atomic weights from elemental percentages in compounds. 这一假设为测定由各种元素组成的化合物的相关原子的质量提供了实际操作策略。
- Early chemists had to use indirect means for determining the atomic mass of an element. 早先的化学家只得用间接的方法来确定某种元素的原子质量。
- A type of atom specified by its atomic number,atomic mass,and energy state,such as carbon14. 核种由它的原子序数、原子量和能量状况具体确定的一种原子,如碳14
- Any of two or more kinds of atoms having the same atomic mass but different atomic numbers. 同量异位素两种或各多种有相同原子质量但却有不同的原子序数的原子中的任一种
- A type of atom specified by its atomic number, atomic mass, and energy state, such as carbon14. 核种由它的原子序数、原子量和能量状况具体确定的一种原子,如碳14。
- Of or relating to an isotope with an atomic mass greater than the average mass of that element. 重的原子质量比该元素的平均原子质量重的同位素的或与之有关的
- Early chemists had to use indirect means for determining the atomic mass of an element . 早先的化学家只得用间接的方法来确定某种元素的原子质量。
- You can plot data for a range of elements for properties like the density or the atomic mass. 你也可以使用一定范围内元素的密度、原子质量等元素性质来构建图表。
- Since 1998 Archimedes Technology Group in San Diego has been developing a filtering method that works via atomic mass rather than chemical properties. 自1998年以来,位于加州圣地牙哥的阿基米德技术公司已经发展了一个过滤法,利用的是原子量而不是化学性质。
- Analysis results of solubilizing products indicated that the ash decreased obviously,H/C and N/C atom mass rate increased. 微生物溶煤产物的工业分析、元素分析结果表明,煤溶物的灰分明显下降,H/C、N/C原子质量比增大;
- The paper points out that in the molecules including atoms,the electronegativity changes with the relative atoms or redicals,the form of hybridization and the oxidation state. 在多原子分子中,元素的电负性受所连原子(或基团)、原子的杂化方式及氧化态等因素的影响。
- A naturally radioactive carbon isotope with atomic mass 4 and half-life 5,780 years, used in determining the age of ancient organic, geologic, or archaeological specimens. 碳4:一种碳的天然放射性同位素,原子量为4,半衰期为5,780年,用于测定古代生物标本,地质标本或考古遗迹的标本的年代
- Extensive research has shown that fractional atomic masses always mean mixture of isotopes. 进一步的研究揭示出:部分原子质量常是同位素的混合物。