一种元素的原子序数是其原子核中的质子数。
An element's atomic number is the number of protons in its nucleus.
早期版本的一些元素原子序数不正确。
Early versions had the incorrect atomic number for some elements.
早期的版本并没有为每个原子序数列出一个元素。
Early versions did not list an element for every atomic number.
据预测，某个地方存在一种原子序数相同的元素，但它还没有被发现。
The prediction was that an element with the same atomic number existed somewhere, but it just hadn't been found yet.
它是根据原子序数的增加来排列的，原子序数是一种元素单个原子的质子数。
It is arranged according to increasing atomic number, which is the number of protons in each atom of an element.
镧系：周期表中从镧到镏（原子序数57～71）15种按顺序排列的化学元素系列。
Lanthanide: Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57-71).
硼：半金属的化学元素，化学符号B，原子序数5。
Boron: Semimetallic chemical element, chemical symbol b, atomic number 5.
结果表明，I簇元素从上到下随原子序数增加，与硫酸钙形成复盐的难度逐渐降低，但规律性不明显。
The results show that with the atomic number of I cluster elements increasing from the top down, they are easier to form complex salts with calcium sulfate, however, the rules is not obvious.
指出选用原子序数小的元素作光纤掺杂剂会有利于光纤抗辐照性能的提高。
In order to improve radiation resistivity, the elements with smaller atomic number should be selected as dopants in both core and cladding of the fiber.
放射性同位素，是指某种发生放射性衰变的元素中具有相同原子序数但质量不同的核素。
"Radioisotopes" refer to a certain type of elements producing radiation decay that have the same atomic number but different mass of nuclides.
和镧的特性相似的一组在化学上有联系的元素，原子序数从57到71；稀土元素。
The set of chemically related elements with properties similar to those of lanthanum, with atomic Numbers from 57 to 71; the rare-earth elements.
铁：金属化学元素，为过渡元素的一种，化学符号Fe，原子序数26。
Iron: Metallic chemical element, one of the transition elements, chemical symbol Fe, atomic number 26.
氢：一种轻的化学元素，化学符号H，原子序数1。
Hydrogen: Lightest chemical element, chemical symbol h, atomic number 1.
铱：金属化学元素，为过渡元素的一种，化学符号Ir，原子序数77。
Iridium: Metallic chemical element, one of the transition elements, chemical symbol Ir, atomic number 77.
芳香环谱带的相对强度和频率对于镧系元素原子序数的依赖关系表明双-双效应的存在。
The dependence of relative intensity and frequency of bands of aromatic ring on the atomic number of lanthanides indicates the presence of a double-double effect.
铍：碱土金属中最轻的化学元素，化学符号Be，原子序数为4。
Beryllium: chemical element, lightest of the alkaline earth metals, chemical symbol be, atomic number 4.
铈：化学元素，周期表iii b族过渡金属中丰度最大的稀土金属。化学符号Ce，原子序数58。
Cerium: chemical element, a rare earth metal of the lanthanide series (hence having many properties of the transition elements), chemical symbol ce, atomic number 58.
一种元素的原子可以互相化合，也可以与别的元素的原子化合，这种能力取决于其原子序数。
The ability of the atoms of an element to combine with one another or with the atoms of other elements depends on its atomic number.
元素周期表中元素的各种性质与其原子序数存在着类似的变化规律，这些规律体现出元素周期表中的复杂系统自组织现象。
There are many rules between element properties and its atom number, which shows that the self-organization of complex system works on element periodic table.
周期表中铀以后的任何化学元素(原子序数大于92)。
Transuranium element Any of the chemical elements after uranium in the periodic table (with atomic Numbers greater than 92).
通过对电子结构的分析，发现杂质能级的深浅与掺杂元素原子序数有关。
It was found that the deepness of impurity energy level is related to the atomic Numbers of doped elements by the analysis of their electronic structures.
计算了原子序数13至23的元素高电荷态离子基态电离能，计算结果与文献可提供的实验数据相符合。
The ionization energy of ground state of highly charged ions whose atomic number is between 13and 23 is calculated, and the results is consistent with experimental data of the literature.
计算了原子序数13至23的元素高电荷态离子基态电离能，计算结果与文献可提供的实验数据相符合。
The ionization energy of ground state of highly charged ions whose atomic number is between 13and 23 is calculated, and the results is consistent with experimental data of the literature.
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