查询词典 periodic element

Nature, most elements have two or more isotopes, the same kinds of elements in the quality of the various isotopes of different, but the types and proportion constant (except for radioactive elements). In 1961, the carbon content of the most abundant in nature, a kind of isotope, carbon-12 atom of a quantity and quality of C as a 12 mass units to it as "benchmarks" for all isotopes of an element according to the average abundance The ratio of the benchmark is the atomic weight of this non-prime, that is listed in the periodic table of atomic weights.

自然界中大多数元素都有两种或更多的同位素，同种元素的各同位素质量不同，但其种类和比例是恒定的。1961年，把碳在自然界含量最丰富的一种同位素，碳12的一个原子的质C量定为12个质量单位，把它作为"基准"，某种元素的所有同位素按丰度的平均值与基准之比，就是这种无素的原子量，即元素周期表列出的原子量。

If one was to look at the Table of Periodic Properties of the Elements, one would notice that the atomic structure of each element is illustrated.

如果是看表的周期性质的元素，人们会发现，原子结构的每个元素说明。

Of course, a periodic table cannot be complete unless it has the atomic mass of the element and so this table uses the rank of the web page as it's "mass".

当然，在元素周期表中，可以是不完整的，除非它拥有原子质量的元素，所以本表使用秩该网页，因为它的"地下"。

Science has laid down the principle that the properties of an element are a periodic function of its atomic weight.

科学发现了这样一条规律："元素的性质是原子重量的周期函数。"

Consisting of the protracting graph of hydrogen-like atom"s angle distributing, computer simulation of the symmetry of molecular orbital and chemical reaction mechanism, showing the molecular point group and symmetry element, computer simulation of molecular vibration, Bravias"s crystal lattice and their transforming, extracting of plane periodic lattice, extracting of solid periodic lattice, close packing of isometrical pellet and the structure of simple mental substance, close packing of unequal pellet and crystal structure of representative ionic crystal, Computer Simulation of Phase Analysis by X-ray Diffraction.

内容包括类氢原子角度分布图的绘制，分子轨道对称性和反应机理的微机模拟，分子点群和对称元素显示，分子振动运动的微机模拟，布拉维晶格和晶格转化，平面点阵抽取，立体点阵抽取，等径网球的密堆积和金属单质结构，不等径圆球密堆积和典型离子晶体结构，X射线多晶衍射的微机模拟十个子模块。

A periodic graphics processing method has been proposed based on the basic element of periodic pattern.

本文提出了一种基于基元图形的周期图形处理方法。

A finite element model of 3-3 piezocomposites was established according to the homogenization method, which combined the techniques relying upon representative volume element and periodic boundary conditions.

压电复合材料是由至少一种压电材料与非压电材料按照一定的连通方式组合在一起而构成的一种具有压电效应的新材料[1]。3 3 型压电复合材料是指压电相和非压电相分别三维连通的压电复合材料。

Rare-earth element lies in sixth period among periodic table of chemical element and includes the 15 elements of lanthanides and elements scandium and yttrium.

稀土元素在化学元索周期表中，为第六周期，属于镧系族及钪、钇共17种元索的总称。

Group in the periodic table there are silver-white metallic luster of the solid metal transition element, atomic number Z = 26, atomic weight of 55847, chemical symbol Fe, there is a stable F isotope 5626Fe and a radioisotope 5526Fe, content of 5% of the earth's crust, accounting for elements of in the fourth place, the metal in the second melting point 1535 ℃, boiling point 2750 ℃, the relative density of 786, the external electronic structure 3d64s2, chemical reactions 2-6 tram F-volatile son, oxidation number of 0, 2, 3, 4 , 5 and 6, the chemical nature of the metal element is very lively, in the humid air combined with oxidation, but also directly with the sulfur, phosphorus, silicon, carbon together.

周期表中Ⅷ族有银白色金属光泽的固体金属过渡元素，原子序数Z＝26，原子量55847，化学符号Fe，有一种稳定F同位素5626Fe和一种放射性同位素5526Fe，地壳中含量5％，占元素中第四位、金属中第二位熔点1535℃，沸点2750℃，相对密度786，外围电子结构3d64s2，化学反应时易丢失2—6个电F子，氧化数为0、＋2、＋3、＋4、＋5和＋6、化学性质很活泼的金属元素，在潮湿空气中能与氧化合，也能直接与硫、磷、硅、碳化合。

The elements of each sequence in odd-periodic perfect almost binary sequence pair are "1" or "-1" with exception of a single zero element, and odd-periodic perfect almost binary sequence pair possess a perfect odd-autocorrelation function.

奇周期最佳几乎二进序列偶中2个序列中均有一个元素为"0"元素，其他元素取值均为"＋1"或"－1"，并且其奇周期自相关函数为单值脉冲函数。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了