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.
然后会出现原子序数，代表了未知元素。
Then, there'd be an atomic number, for which there was no known element.
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.
我在看的是非典，作为原子序数的功能。
What I am looking at here is boiling point as a function of atomic number.
电离室电极用高原子序数的金属制造。
这是原子半径和原子序数。
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.
教授：5，有5个价电子，但原子序数是7。
PROFESSOR: five — there's five valence electrons, but the atomic number is actually seven.
非金属化学元素，化学符号P，原子序数15。
Phosphorus Nonmetallic chemical element, chemical symbol P, atomic number 15.
还讨论了这些物理量随原子序数变化的定标律。
We also discussed the Z-scaling law of these physical quantities.
其中之一，我已经选择的是，沸点及原子序数。
One of them here I happened to choose is boiling point versus atomic number.
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.
碘：非金属化学元素，化学符号I，原子序数53。
Iodine: Nonmetallic chemical element, chemical symbol I, atomic number 53.
金与碘相比，有着更高的原子序数和X射线吸收系数。
Compared with iodine, Gold has a larger atomic number and X-ray absorption coefficient.
性质不发生根本的改变，原子序数的改变是不可能的。
No change in atomic number is possible without a radical change in properties.
高密度材料通常由较大原子序数原子构成，例如金和铅。
Materials with high densities often contain atoms with high atomic Numbers, such as gold or lead.
高密度材料通常由较大原子序数原子构成，例如金和铅。
Materialss with high densities often contain atoms with high atomic Numbers, such as gold or lead.
钾：一种碱金属化学元素，化学符号k，原子序数19。
Potassium: chemical element, one of the alkali metals, chemical symbol k, atomic number 19.
B4 c涂层提供了低z(原子序数)和稳定的耐熔表面。
B4C coating can provide low Z and stable refractory surface.
电子射程随着原子序数的减少和入射束能量e0的增加而增加。
The electron range increases with decreasing atomic number and increasing incident beam energy E0.
它们有相同的原子序数，因此化学行为几乎完全一样，但原子量不同。
They have the same atomic number and hence nearly identical chemical behaviour but different atomic masses.
20世纪，在了解原子结构后，周期表可精确地反映原子序数增加的顺序。
In the 20th century, when the structure of atoms was understood, the table was seen to precisely reflect increasing order of atomic number.
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.
那就是为什么这里说原子序数，但如果没有意图和目的，我们就说是原子质量。
That is why this says atomic number, but for most intents and purposes we can say this could be atomic mass.
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.
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).
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).
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