族

Lanthanides belong to the sixth cycle of the periodic table Ⅲ B family, are all solid metal, they are La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, holmium, erbium, thulium, ytterbium, and lutetium were 15 kinds of metals and their periphery are two layers of electronic 5d16s2, while the peripheral third layer f orbital but never zero to 14, so the external electronic structure of 4f0-145d16s2, and therefore these elements in oxidation number are to 3, very close chemical properties, extraction, when it is difficult to separate them they are mostly multi-element mineral mix, more difficult to increase refining, and their atomic number of 57-71, one by one to increase the number of protons the nucleus, and thus extranuclear electron of gravity is also growing, so that atomic radius decreases with increasing atomic number Z, which makes lanthanides contraction, ionic radius is also reduced, which also makes Zr, Hf, Nb and Ta, Mo and W, the atom and ionic radius very close to each other they also determine a similar nature, resulting in difficult separation, also the tribe Ⅷ of the fifth cycle, ruthenium, rhodium, palladium, and the sixth cycle, osmium, iridium, platinum is very similar in nature, thus The six elements, said platinum group elements.

镧系元素属于周期表第六周期中ⅢB族，全部是固体金属，它们是镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱和镥共十五种金属元素，它们的外围两层的电子均是5d16s2，而外围第三层的f轨道电子却从零增加到14个，所以外围电子结构为4f0－145d16s2，而使这些元素氧化数均为＋3，化学性质极为接近，提炼时很难分开，它们的矿石又大多是多种元素混在一起的，更增加提纯难度，它们的原子序数为57－71，核内质子数逐个增加，因而对核外电子引力也不断增强，使原子半径随原子序数Z增加而减小，这就使镧系元素收缩、离子半径也缩小，这也使得Zr和Hf，Nb和Ta、Mo和W等原子和离子半径都很接近、也决定了它们彼此性质类似，以致难以分离、也使第Ⅷ族中第五周期的钌、铑、钯和第六周期的锇、铱、铂在性质上极为相似，因而称这六个元素为铂系元素。

This article believed, in our country, identity characteristic of ethnic group was mainly based on national policy, and influenced by ethnic group factor, contact interaction in history, the change of social environment and so on.

就毛南族的形成来看，它形成于地方社会的复杂的社会互动过程中，而不是基于他们认定的共同祖先和族源的结果。

In this paper we discuss the relation of shared values and normal families, and obtain some normal criteria of the family of meromorphic functions.

本文主要讨论了亚纯函数的分担值与亚纯函数的正规族之间的关系，得到了关于亚纯函数族的一些正规定则。

In chapter 3, we introduce a new family of functions with negative coefficients T,...

第五章根据α螺旋形函数的定义及算子D~λ定义一族新的解析函数类S_α，导出族中函数的积分表达式；研究了S_α中函数的某种积分运算及卷积定理。

And when adjusting parameter t, a family of subdivision surfaces can be constructed.

文中对这族细分曲面的性质进行了较详尽的分析，并证明了在参数t不等于零时这族曲面在非奇异点处至少具有C~1连续。

Based on this property, by solving a series ODEs we construct a two-parametric family of helicoidal surfaces under cubic screw motion with prescribed mean curvature or Gauss curvature and solve an open problem left by Beneki.

基于这一点，当螺旋面的平均曲率或Gauss曲率为给定光滑函数时，本文选取伪正交标架，使得两类螺旋面的平均曲率和Gauss曲率的表达式相对简化，通过求解一系列的非线性常微分方程，即可确定一族生成曲线，从而最终确定平均血率或Gauss曲率为给定光滑函数的双参数族螺旋面，并在这一过程中解决了Beneki等人留下的一个公开问题。

But the play's complex view of Black self-esteem and human solidarity as compatible is no more ''contradictory'' than Du Bois' famous, well-considered ideal of ethnic self-awareness coexisting with human unity, or Fanon's emphasis on an ideal internationalism that also accommodates national identities and roles.

但是这出戏的复杂的、把黑人自尊和人类团结看成是和谐的观点，与Du Bois的著名且深思熟虑的将名族自我意识共存于人类大同的理想，或是Fanon对国际主义也要包含名族身份和角色这一点的强调一样，都是不"矛盾"的。

This excerpt from the after-action report of Flight Sergeant Aaron Keebler helps underline the rapidity with which the protoss can switch their stance.

以下这段来自人族空军上士Aaron Keebler的战后简报可以让我们更深刻地认识到，神族在时空距离的转换上是何等的迅捷。

In these packed communities , the people clung to their native languages, institutions and folkways

他们的行动导致塞浦路斯的希腊族和土耳其族居民之间的社区冲突。

In the rites of adulthood of the Rukai and Paiwan people, it is essential to hold a footrace .

在鲁凯族与排湾族的成年礼中，必须举行赛跑。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐