四对的

Results show that there are four characteristics, three advantages and four disadvantages in Yunnan investment environment. And we may divide investment environment of Yunnan province into four classes, three areas and three types. Therefore, optimizes on its investment environment should be well considered and planed as a whole. Therefore, people should put emphases on optimizes of human geography investment environment system, and treat differently on regional investment environment, and improve the occasion.

研究结果显示，云南省投资环境具有四个特点、三大优势和四项弱势，可以分为四个等级、三个区域和三种类型，对其投资环境的优化应该在全面考虑、统筹安排的基础上，以人文投资环境系统的优化为重点，对地区投资环境优化则应区别对待、因势利导。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

Methods:Fifty paired embalmed cadaveric humeri (twenty-five pairs:fourteen from male donors and eleven from female donors) were scanned in medial-lateral and anterior-posterior position according to the humeral retroversion by CT. Images of the humeri in the transverse planes at the lowest border of neck,20mm and 40mm distal of LBN(LBN-20、LBN-40), isthmus, head-neck anterior-posteriorwere obtained. Sixty-one extracortical and intracortical parameters were measured exactly by image analytic computer software that included offset, head position, head-shaft angle, head to tuberosity height, head thickness, curvature radius, articular surface arc, neck diameter, isthmus position, proximal and distal border of isthmus, maximum coronal and sagittal diameter of medullary canal and thickness of cortical bone in four planes, including LBN, LBN-20,LBN-40 and isthmus.

50根成对防腐肱骨(男14对，女11对)按肱骨头扭转角置于冠状位和矢状位，行肱骨全长，头颈矢状面，解剖颈下缘及其下20mm、40mm，髓腔狭窄部四平面CT扫描，由CT软件测量冠、矢状位髓腔内外参数共61项，包括头心—干轴距，头位置，头干角，头—结节高度差，头厚度，头半径，关节面张角，解剖颈直径，髓腔狭窄部位置，解剖颈下缘及其下20mm、40mm和狭窄部四个平面髓腔的最大冠、矢状径，皮质骨厚度等。

Four research results in the research are provided on the basis of wholly absorbed attention behavior performance including eyes-gazing, concentration as well as completion of orders, attention-testing performance, and multiple attention-testing performance. The collected materials are analyzed throughvisual analyze and Tryon's C statistic. The results of this research are as follows: 1. Attention-training maintains and give rise to samples' attention behavior. 2. Attention-training makes samples' attention-testing performance better. 3. Attention-training has generalization effects on samples' self-instruction and strategies for monitoring and behavior. 4. Attention-training has different effects on samples of different genders.

本研究以专心注意行为表现、自编注意力测验表现、多向度注意力测验表现及班级教师访谈问卷四项结果作为依据，所得的资料以目视分析法及C统计进行分析，所得研究结果如下：一、三位受试者之C统计值达显著(P1.65)，显示注意力训练对受试者的专心注意行为具有提升与维持效果；二、三位受试者在四项分测验中，有三项测验之C统计值达显著(P1.65)，显示注意力训练对受试者在注意力测验的注意力表现具有提升效果；三、由班级教师访谈问卷分析中得知注意力训练对受试者的自我指导、监控策略与行为具有迁移效果；四、由自编注意力测验结果分析显示，注意力训练对不同性别学生能显现不同的训练效果。

OBJECTIVE: To investigate effects of Taohong Siwu Decoction on adipogenic differentiation of steroid-induced BMSCs.

本实验通过大剂量激素诱导促使BMSCs成脂分化，并加以桃红四物汤含药血清干预，观察桃红四物汤对激素诱导BMSCs成脂分化的干预作用，旨在阐明该病的发病机制，并为桃红四物汤对该病的治疗提供理论依据。

More and more financing and technology are plough into the tradition machine for exerting efficiency and prompting precision rapidly,acquire well impression.

为了充分发挥江西第四机床厂效能，迅速江西第四机床厂加工技术与第四机床，越来越多的江西第四机床每年投入大量资金和技术对传统老式组合机床进行技术改造，取得了良好的效果。

To find some abstract criterions for governments functional department to make the theoretical foundation of relevant policies, can effective reduction and controlling the size of population of the . disadvantaged groups.This paper carries on the sampling research by the questionnaire survey and individual cusses interviews method to four social vulnerable groups, such as the poor farmers, the city farmer workers, the city unemployed worker and the disable or sick.

本文采用问卷调查法和个案访谈法对我国贫困农民，城市农民工，城市下岗工和残疾人等四类弱势群体进行抽样研究，运用数理统计法对调查数据进行统计，结合有关专家的建议和近几年来国内有关的文献资料，首先对我国弱势群体的总体体育消费状况进行了分析描述，然后分别对我国四类(弱势农民群体、城市农民工群体、城市下岗工人群体、残疾人群体等)弱势群体的基本特征、体育消费现状、体育消费倾向和体育消费发展趋势等四个方面的相关数据进行比较分析和论证。

The second part: It was the main text point, elaborated the formation process of petroleum safety policy in Middle East of the United States, insured the American national security, chastened Soviets petroleum to extend, and guarantied the western allies petroleum to supply safety, which was the United States the outward policy's important and strategic target to the safety policy of petroleum of Middle East particularly. At the foundation that the second part discussed on, the third part talked about the United States building the natural cover that was set up to keep Soviets petroleum influence from going down south, controlled Middle East petroleum resources, maintained the petroleum charter power, insured the western petroleum to supply and transport safety, kept Soviets petroleum from entering Western Europe, chastened "" newcomer"" and carried on the total analysis to the American petroleum of Middle East safety policy's contents and substances from four aspects. The fourth part: carried on the valuation to the safe policy of American petroleum of Middle East fromfour aspects, analyzed its gain and loss.

确保美国国家安全，遏制苏联石油扩张，保障西方盟国石油供给安全，是美国对外政策尤其是对中东石油安全政策的重大战略目标；在第二部分论述的基础之上，第三部分从美国构建阻止苏联石油势力南下的屏障，控制中东石油资源、维持石油特许权，确保西方石油供给、运输安全，阻止苏联石油进入西欧、遏制&新来者&四个方面对美国中东石油安全政策内容及实质进行总体分析；第四部分，从四个方面对美国中东石油安全政策进行评估，分析其得失。

In order to explain clearly the variation status of embryo from tetrapoid Robinia pseudoacacia and fully use the variation resource initiated in the sexual reproduction of TRP in the further improvement of TRP, the classification and vitalities of seed embryos from tetraploid Robinia pseudoacacia were studied. The main results are as follow. According to the cotyledon number, color and plumpness, the seed embryos of TRP could be divided into 5 types: YVT (yellow, very replete,2 cotyledons), YMT( yellow, more replete,3 cotyledons ), YRF ( yellow, replete,4 cotyledons ), GNT ( green, no-replete, 2 cotyledons ) and WNT ( white, no-replete, 2 cotyledons ).

为了阐明刺槐同源四倍体种子胚变异状况及充分利用刺槐同源四倍体有性过程创造的变异资源对四倍体刺槐进行遗传改良，研究了刺槐同源四倍体种子胚类型及其生活力特征，主要结论如下：刺槐同源四倍体种子胚按照子叶数量、颜色及饱满程度，可以划分出5个类型：黄二、黄三、黄四、绿二及白二，所有类型种子胚混合平均单胚重量接近二倍体的1/2。

The main work of this paper: Firstly, Basing on the summarization and analysis of the walking mechanism, Parallel drive five-bar mechanism is applied for walking mechanism. And then the characteristic of the trail and positive kinematics as well as reverse kinematics are discussed. Secondly, the model of walking mechanism is established according to Parallel drive five-bar mechanism, and then a figure planning is designed for the foot-end trail. The characteristics of the parallel drive are emphasized to research in this paragraph by the method of insert value. At last, the simulation is performed in the ADAMS to compare the real result to the theoretical value. Thirdly, a sealed structure of a Quadruped Walking Robot is designed and established. The whole control system, including motor, sensor and control circuit, is sealed in the robot. Walking is derived in the way of the shaft driving and the dynamic torque sensor is used to the surrounding conditions of the robot's foot-end to be the foundation of the robot's control. At last, the applying principle of the dynamic torque sensor is researched in detail basing on the traditional sensor of the walking robot. Moreover, the principle is divided into several sorts to discuss. Finally, simulation and verification of the monitor principle are come through in the Mechanism of the Pro/Engineer.

论文的主要工作有：在对传统步行机构总结分析的基础上，提出将平面并联五杆机构应用于四足步行机器人的腿部结构，并对其轨迹特性、正运动学、逆运动学特性做了详细计算分析；依据平面并联五杆机构的模型，建立机器人步行机构的实体模型，对其足端的轨迹做了图谱规划，并利用插值法对并联驱动端的特性曲线作了研究，并在ADAMS中进行仿真，将结果与理论值相比较；然后设计了一套四足步行机器人密封装配结构设计方案，建立四足步行机器人单足结构、驱动以及传感器监测的三维实体模型，将机器人的整个控制系统，密封装配在步行机器人的机体中，通过轴传动来驱动步行机构实现步行，采用动态扭矩传感器监测步行机构的驱动关节受到的扭矩变化，从而获得四足步行机器人足端的周围情况，为步行机器人的控制方案奠定了基础；论文的最后在分析步行机器人传统控制传感器的基础上，详细分析了动态扭矩传感器的监测原理，并分几种情况分别分析了其监测原理，并在Pro/E的Mechanism模块中实现了监测原理的仿真与验证，最后给出了传感器监测信息与系统判断之间的关系。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。