骨干的

On the base of the principal factors selected from natural, social and economical conditions in Shenyang, 230 varieties virescence plants are analyzed and ranked, the paper picks out diaphysis trees, basic trees, ongoing expansion trees, adequately retained trees and selective trees from them, and the selection and adjustment program of basic trees and diaphysis trees.

在此基础上，采用园林专家咨询评价的方法，结合前人的研究成果及园林工作的实践总结，从生态适应性、观赏性、生态效能等方面全面系统的建立了沈阳市绿化植物的评价应用的综合指标体系，并根据沈阳市的自然条件和实际情况确定了主要的指标因子对沈阳市常见的230种绿化植物进行了综合评判和分级，筛选出最适宜的骨干树种和适宜的基本树种及宜继续推广的、可适当保留的或应淘汰的种类，提出了沈阳市绿化基调树种和骨干树种选择和调整的方案。

To solve this problem, based on the concept of graph theory we give a few models and arithmetic designs of virtual backbone in the environment of different application, and propose the corresponding routing mechanism with these virtual backbones. The major achievements are outlined as follows:The state of host's power or the time of host's online plays an important role in keeping stability of a virtual backbone. With a view to this feature, the paper introduces a simple and efficient heuristic algorithm for calculating the virtual backbone by seeking a minimum connected dominating set with maximal weight. The maximality of the weight-based choice of backbone nodes guarantees that the most suitable nodes have been chosen for the role of backbone nodes so that they can properly coordinate all the other nodes and keep stability of the virtual backbone in the network.

为了解决这个问题，本文利用网络图论中的一些理论，在不同的应用环境下给出几种虚拟骨干网的模型、构建及基于稳定性和节能的算法设计，并针对这些骨干网提出相应的分层路由机制，主要研究内容和贡献如下：考虑到主机的功率大小和在线时间长短对虚拟骨干中心的相对稳固性的影响，提出用基于极大权的最小连通支配集模拟虚拟骨干网；并给出其数学模型和相应的启发式算法，确保了性能强的主机担任骨干节点；通过优化规则确保骨干网的极小性，有效地减小了控制分组转发开销；最后进行了仿真验证。

The minimality of the virtual backbone is assured by designing optimization algorithm. As a result, it can effectively decrease the overhead of control packets dissemination. Simulation resluts show the correctness and the ability of self- renew.Considering the characteristic of fast-moving in wireless ad hoc networks, we construct a virtual backbone with a independent dominating set. This method can avoid sustaining connectivity between backbone nodes and the bakebone network can be rapidly reconstructed as topology change.

对规模较大、移动较频繁的ad hoc网络，用独立支配集构建虚拟骨干网，克服了骨干节点之间必须维护连通性的问题，使得拓扑变化较快时骨干网的重构能快速实现；采用动态按需路由机制，解决了骨干节点要维护路由表的问题；还利用极大独立集的求解得到极小独立支配集；并通过仿真测试了算法的正确性及自恢复能力。

The structure of prehnite consists of ions Ca~(2+),Al~(3+),OH~- and[Si_3AlO_(10)]_n~(5n-).

葡萄石结构系由 Ca~(2+)，Al~(3+)，OH~-和[Si_3AlO_(10)]_~5(？-等离子组成，其中层型硅氧骨干系与(001)面平行，相隣的骨干通过离子 Al~(3+)得以结合。

Most of the chief ones at and above the level of county Party committee or regimental rank in the army have gone through long years of revolutionary struggle.

现在，县以上的主要骨干，军队团以上的主要骨干，大多数是经过长期革命斗争锻炼的。

Accordingly, strengthening the construction of skeleton grid is the ultimate resolvent to ensure secure-and-reliable operation of power system. However, an economic and valid approach to strengthen the skeleton grid is to construct the ultra high voltage transmission lines.

因此，加强骨干网架建设是保障系统稳定运行的根本解决办法，而加强骨干网架经济而有效的途径是建设特高压输电线。

From May 2005 to July 2006, I had a share in the compiling of the Course of Educational Technology Training (thereinafter, the Training Course for short), and participated in the training for national master teachers and master teachers from Jiangsu Province. Also, abundant data were collected in this process.

2005年3月到2006年7月，笔者参与了《教育技术培训教程》的编写，并参加了《培训教程》国家级骨干教师培训和江苏省省级骨干教师培训，在此过程中，收集到详细的资料。

Abstract］ objective to improve the diagnosis of non-ossifying fiboma by analysing its x-ray feature.methods plain x-ray films was performed in all patients.x-ray finding in 8 cases with pathologically-confirmed non-ossifying were analyzed.results the clinical symptom was mild,the lesions occurred usually at the metaphysis of the long bones,the affected bones included femur（n=4）,tibia（n=3）,humerus（n=1）.cortical type was seen in 5 cases,presenting as unilocular or multilacular transparent areas with in the cortex or tightly beneath the cortex,the lesion had a sclerotic margin.which was more obvious at the marrow side.medullary type was seen in 2 cases.the lesion was located at the center of the bone and grew centrally.the tumor was manifested as unilocular or multilocular.tramsparent area with sclerotic border and the bone cortex became thinner with slightly expanding on 11 sides.conclusion plain radiography is the elementally means to detect this disease.based on the typical x-ray signs of non-ossifying fibroma combined with clinical data,correct preoperative diagnosis can be made in most cases.

目的 探讨非骨化性纤维瘤的x线表现以提高诊断水平。方法所有病例均摄有x线平片，分析经病理证实的8例非骨化性纤维瘤。结果临床症状轻，好发于下肢长骨干骺端或骨干，股骨4例，胫骨3例，肱骨1例。皮质型5例，表现为皮质内或紧贴皮质下的单层或多层透亮区，病变向骨内发展进入髓腔，周围有致密硬化带环绕，以髓腔侧明显；髓质型2例，病灶在骨内中央发展，显示为单房或多房透亮区，边缘有硬化，骨皮质菲薄，轻微向周围膨隆。结论 x线为最基本的检查方法，典型病例x线平片结合临床症状即可明确诊断。

To achieve this great vitalization, teachers of 21st century shoulder an important task.. At the turning of last century, the Ministry of National Education and the Chief Bureau of National Physical Education praised advanced individuals who had made contributions in the field of hygiene and physical education at schools in the past two decades, and selected 495 outstanding workers all over the country. In 2000, the Ministry of National Education chose 320 outstanding PE teachers at the primary and secondary schools as the national skeleton teachers to attend the National Training Program for the Teachers at Primary and Secondary Schools.

要实现中华民族的伟大复兴，21世纪的教师重任在肩，责无旁贷。1999年，国家教育部和国家体育总局对20年来在学校体育卫生工作领域中做出突出贡献的先进个人进行了表彰，在全国范围内评选出495名"全国学校体育卫生工作先进个人"。2000年，国家教育部又在全国中小学体育教师中选拔出320名优秀体育教师作为国家级骨干教师参加"跨世纪园丁工程中小学骨干教师国家级培训"。

Schools adhere to the "Education is the fundamental quality of life, school is the soul, teaching-centered, teaching and research as the guide, teachers are the key" school of thought, the implementation of "great works","Dracocephalum project" Forging-class team, 283 full-time teachers, 86 senior teachers, teachers of 115 level, including national excellent teachers, the backbone of the national teachers 5 class teachers in 4 people in Hebei Province, Hebei Province, outstanding teachers, teachers in 14 provincial-level key, Handan City, top-notch talent, exemplary teachers, and 19 outstanding teachers.

学校坚持&育人是根本、质量是生命、校风是灵魂、教学为中心、教研为先导、教师是关键&的办学思想，实施&名师工程&、&青兰工程&锻造一流队伍， 283名专任教师中，高级教师86人，一级教师115人，其中全国优秀教师、国家级骨干教师5人，河北省特级教师4人，河北省优秀教师、省级骨干教师14人，邯郸市拔尖人才、模范教师、优秀教师19人。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。