
promote the extension of strictly administering the party grass-roots, but also the educational practice of the mass line of the party and "three-three" special education results achieved further inherited and expanded. To realize "two a" learning education is a necessary solution to the present problems of party construction. Strengthen problem consciousness and insisted on problem-oriented, is full of strictly administering the party since the party's 18 a distinctive feature, a successful experience. Secretary Wang noted that some party members still have political awareness, lack of political responsibility issues, party awareness and consciousness of the problem belief does not really believe, slim does not actually fix problems, outspoken, and jump on the assessment of the party's policies, and so on. Bi Lifu Secretary pointed out that a quarter of the economic situation is very serious, there is pressure on environment, seasonal factors and other objective reasons, but mainly subjective
problem, is the problem of party members and cadres. Some depressed, negative slack, not responsible, ... Double six, one, and two took the lead, build energy burst, Hongshan district, economic prosperity, eco-livable, civilized and harmonious island. It certainly can not be separated from the whole area 646 grass-roots party organizations and 14,146 members of broad participation and support. Through the "two" study and education, so that every cell of the party health, every organization is strong, so that all members of the vanguard and exemplary role, all the fighting bastion role of grass-roots party organizations into full play so that we can cross the Rapids, overcome all difficulties and the smooth realization of the "Thirteen-Five" goal. Second, basic learning, focus on learning education must understand the learning content and learning styles "Foundation learning" these four words are important information inside is very large, capture profound work truth in life. For example, I
often say that the good Carpenter NAO Carpenter, why do some carpenters made furniture to have everybody likes it, Carpenter we are not willing to look for him? are apparently two people high and low technology, dig into the deep is firmer when both of his apprentices are not solid, there is no good that way. Luban art of story primary school are learn had, first after six mark test practice conduct, and practice cultivation, and practice perseverance, and practice patience, then with seven days seven night mill axe theory armed, and unity action, seriously learning XI General Secretary on re form development stable, and Interior diplomatic defense, and rule party ruling arm y of important thought, seriously learning to XI comrade for General Secr etary of Central ruling acting political new concept new thought new strategy, seriously learning XI General Secretary study in Inner Mongolia important speech spirit, Guide party members and a deep understanding of a series of important
speeches rich connotation and core ideas, which began so thoroughly Marxist positions
涉及重大决策事项、重要人事任免、重大项目安排和大额度资金使用等,具有决策、行政执法、行政许可、部门管理等决策、审批、自由裁量、事务管理决定权的领导岗位。
To sum up, is divided into 9 main parts: 1. with regard to persisting and developing socialism with Chinese characteristics. 18 since the XIOn more than one occasion, General Secretary of the historical origin and development process of socialism with Chinese characteristics, the road of socialism with Chinese characteristics, System Info, system, uphold and develop the understanding of socialism with Chinese characteristics is determined to have been profoundly expounded, further strengthened the party and the people adhere to and develop the confidence and determination of the socialism with Chinese characteristics. XI General Secretary's speech in this regard include the people's yearning for a better life, that is our goal, closely focus on the development of socialism with Chinese characteristics study and publicize the spirit of party 18, the unwaveringly adhere to the development of socialism with Chinese characteristics, the persistence and good use of Mao Ze-Dong's thought of
soul. 2. with regard to the Chinese dream of realizing the great rejuvenation of the Chinese nation. 18 closing soon, the new Central collective leadership when they visited the exhibition of the road to recovery, XI, General Secretary of the solemn declaration "the great rejuvenation of the Chinese nation, the greatest dream of the Chinese nation in modern times." Zhihou, on more than one occasion, General Secretary expounded the scientific connotation of Chinese dream, realize the Chinese dream must take the road, carry forward the spirit and cohesion of Chinese forces, gradually formed the China dream, a strategic thought. And practice with the Chinese dream, reflects the history of the new session of the CPC Central Committee, and conforms to the development trend and the people hope, embodies the greatest common divisor and the consensus of Chinese people at home and abroad, inspiring all peoples forging ahead in unity, the spirit of unswervingly follow the road of
socialism with Chinese characteristics flags and high melody. This aspects XI General Secretary of speech main including achieved Chinese great revival is Chinese modern yilai most great of dream in 12th session national people's Congress first times Conference Shang of speech work to dream into really in achieved China dream of vivid practice in the flying youth dream achieved China dream not only benefit people, and benefit world people innovation due its Shi, dream suitable have its potential achieved Chinese great revival is both at home and abroad Chinese children common of dream,. 3. on deepening reform. 18 since the XI General Secretary for the first time to Study on the choice of the Guangdong, unequivocally express the unswervingly follow the road of reform and opening up power determination and courage. Party's 18 session adopted a decision to deepen reform, opened a new journey for deepening the reform in our country. Central has held 22 times full deepening
reform led Group Conference, considered through more than 100 more items important reform programme, developed introduced more than 800 over
再以一定的数据结构形式对所定义的几何实体加以描述,从而在计算机内部构造一个实体的几何模型。通
过这种方法定义、描述的几何实体必须是完整的、唯一的,而且能够从计算机内部的模型上提取该实体生
成过程中的全部信息,或者能够通过系统的计算分析自动生成某些信息。
几何信息是指构成三维形体的各几何元素在欧氏空间中的位置和大小,它可以用具体数学表达式来进
行定量描述。拓扑是研究图形在形变与伸缩下保持空间性质不变的一个数学分支。拓扑不管物体的大小,
只管图形内的相对位置关系。拓扑信息反映三维形体中各几何元素的数量及其相互间连接关系。各种几何
元素相互间的关系构成了形体的拓扑信息。如果拓扑信息不同,即使几何信息相同,最终构造的实体可能
完全不同。
3、试分析三维几何建模的类型及其应用范围。
答:线框建模:不适用于对物体需要进行完整性信息描述的场合,一般使用在适时仿真技术或中间结果显
示上。
表面建模:增加了面、边的拓扑关系,因而可以进行消隐处理、剖面图的生成、渲染、求交计算、数
控刀具轨迹的生成、有限元网格划分等作业;但表面模型仍缺少体的信息以及体、面间的拓扑关系,无法
区分面的哪一侧是体内或体外,仍不能进行物性计算和分析。
实体建模:可对实体信息进行全面完整的描述,能够实现消隐、剖切、有限元分析、数控加工,对实
体着色、光照及纹理处理、外形计算等各种处理和操作。
4、实体建模的方法有哪些?
答:实体建模的方法有:体素调用法,空间位置枚举法,单元分解法,扫描变换表示法,体素构造表示法
和边界表示法。
5、实体建模中是如何表示实体的?
答:实体模型提供了面和体之间的拓扑关系。在实体模型中,面是有界的不自交的连通表面,具有方向性,
其外法线方向是根据右手法则由该面的外环走向确定,其中的环,是由有向边有序围成的封闭边界,确定
面的最大外边界的环叫外环,按逆时针走向,面中的孔或凸台周界的环叫内环,按顺时针走向。
6、什么是体素?体素的交、并、差运算是何含义?
答:体素的定义方式有两类:一类是基本体素,另一类是扫描体素。基本体素可以通过输入少量的参数定
义。扫描体素又可以分为平面轮廓扫描体素和三维实体扫描体素。平面轮廓扫描法是一种将二维封闭的轮
廓,沿指定的路线平移或绕任意一个轴线旋转得到的扫描体。三维实体扫描法是用一个三维实体作为扫描
体,让它作为基体在空间运动。
体素的交运算结果是多个体素的重合部分;并运算的结果是多个体素包含的所有部分;差运算的结果
是一个体素包含的部分减掉重合部分。
7、简述边界表示法的基本原理和建模过程。
答:边界表示法的基本思想是将物体定义成由封闭的边界表面围成的有限空间。这样一个形体可以通过它
的边界,即面的子集来表示。边界表示法强调的是形体的外表细节,详细记录了形体的所有几何和拓扑信
息。
边界表示的模型通常采用翼边数据结构。在表面、棱边、顶点组成形体的三要素中,WED以边为核心
来组织数据。棱边的数据结构中包含两个点指针,分别指向该边的起点和终点,棱边被看做一条有向线段。
当一个形体为多面体时,其棱边为直线段,由它的起点和终点惟一确定。当形体为曲面体时,其棱边为曲
线段,这时必须增添一项指针指向该曲线数据。此外,WED中另设有两个环指针,分别指向棱边所邻接的
两个表面上的环,由这种边环关系就能确定棱边与相邻面之间的拓扑关系。为了能从棱边出发搜索到它所
在的任一闭环上的其他棱边,数据结构中又增设了4个指向边的指针,分别是左上边、左下边、右上边、右
下边。其中右下边表示该棱边在右面环中沿逆时针方向所连接的下一条棱边,而左上边为棱边在左面环中
沿逆时针方向所连接的下一条线,其余类推。
11、何谓特征?与实体建模相比,特征建模有何突出优点?
答:从加工角度看,特征被定义为与加工操作和工具有关的零部件形式以及技术特征;从形体造型角度看,
特征是一组具有特定关系的几何或拓扑元素;从设计角度看,特征又分为设计特征、分析特征和设计评价
特征等。
优点:特征造型则是着眼于更好地表达完整的产品技术和生产管理信息,为建立产品的集成信息模型服务;
使产品设计工作在更高的层次上进行,设计人员的操作对象不再是原始的线条和体素,而是产品的功能要
素;有助于加强产品设计、分析、工艺准备、加工、检验各部门间的联系,更好地将产品的设计意图贯彻