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In addition, the blank holding force that is required to avoid wrinkle and rupture during conical part deep drawing is researched. The necessity of reasonable blank holding force in pressing is expounded. From the view of mechanical analysis, the wrinkle critical condition of side-wall is derived for the first time by the stress state of side-wall, the main deformation region on blank. According to the critical condition of plastic instability for flange, side--wall, corner of punch on blank, The blank holding force in conical part deep drawing is divided into four different regions within its forming figure. The basic principle of reasonable blank holding force during stamping is summarized and provided. The mathematical model of reasonable blank holding force that avoids the wrinkle and rupture is established and verified by the finite element numerical simulation and the grid experiment method. The result shows that it is accurate and reliable.

此外，本文还研究了圆锥形件拉深成形过程中，随着拉深变形过程的进行，毛坯为避免产生起皱、破坏缺陷而对压边力的需求情况，阐明了圆锥形件拉深成形过程中压边力合理变化的必要性；由毛坯主要变形区悬空锥壁部分的受力变形情况，从力学分析的角度，首次推导得出了圆锥形零件悬空锥壁起皱失稳的临界条件；并根据主要变形区法兰、悬空锥壁及凸模圆角部分的塑性失稳临界条件，在其成形范围图中，将圆锥形件成形过程中的压边力划分为四个区域；总结并提出了圆锥形件成形过程中压边力合理变化的基本原则；建立了防止起皱、破坏缺陷产生的压边力合理变化的数学模式，并得到了有限元数值模拟及网格实验法的验证，证实了理论分析结果的正确性和可靠性。

This paper introduces the research results of techniques of testing PC pump oil well through one-year efforts. Which covers the mathematical models of a number of force characteristics strength analysis, and resonance critical problems of rotation rod-string in PC pump wells: resulting of testing method of polish-rod load and rotation rate on the basis of feasible demonstration and technical requirement analysis; study and manufacture of system of testing PC pump well, which involves sensor, collector ring, acquisition circuit and computer; research and determination of assistant technology of testing force on rotation polish-rod and formulation of testing force on polish-rod. A spot testing has been carried out by means of the above research fruit and good results have been achieved.The success testing results in has laid a strong foundation for the oil well diagnosis.

本论文介绍了对螺杆泵采油井的研究成果，其内容包括，对螺杆泵采油井中的旋转杆柱的若干受力特征、强度分析方法及共振临界问题进行数学建模；在可行性论证和技术需求分析的基础上，研究产生了对油井进行光杆负载和旋转速度测试的办法；研究制作了螺杆泵采油井测试系统，它包括传感器、集流环、采集电路和计算机等；研究确定了对实施旋转光杆测力的辅助工艺；制定了对光杆受力进行测试作法，利用以上研究成果实施了现场测试，并取得了理想的结果。

In addition, to fully utilize and optimize the CNGI backbone network, Zhu Dewang infrastructure, continue to promote the next generation of the Internet in research, operations, and important industry applications, services in scientific research and development and economic and social development, and promote the training of qualified personnel to further improve autonomy Innovation and key equipment of the scale of production capacity, including the basic formation of the core network equipment, access equipment, terminal equipment, testing equipment, a complete industrial chain and promote the next generation of the Internet standardization process, enhance China in the field of next-generation Internet core competitiveness.

另外，还要充分利用并优化CNGI骨干网、驻地网基础设施，继续推动下一代互联网在科研、运营以及重要行业的应用，服务于科研开发及经济和社会发展，并促进人才培养；进一步提升自主创新能力和关键设备规模生产能力，基本形成包括核心网设备、接入设备、终端设备、测试仪器在内的完整产业链，推动下一代互联网标准化进程，增强我国在下一代互联网领域的核心竞争力。

Since retiring in 2001, he has served as executive director of the Quinte Ballet School of Canada and Canadian coordinator for the National Association of Forensic Accountants. A Rotarian since 1962, Wilkinson is currently a PolioPlus National Advocacy Adviser and a member at large of the PolioPlus Partners Task Force.Previously, he has served RI as district governor, Intel-national Assembly group discussion leader, consultative group member, committeemember and chair, task force member,Foundation trustee, director, and vice president.

自从在2001年退休以来，他担任加拿大Qumnte芭蕾学校的执行主任以及加拿大法庭会计师全国协会的协调从1962年起他成为一位扶轮社员，Wilkmnson目前是小儿麻痹等疾病国家病顾问以及无特定任务小儿麻痹等疾病夥伴行动小组委员会委员，他於国际扶轮担任过地区总监、国际讲习会分组讨论领导人、谘询小组委员、委员会委员和主委、行动小组委员会委员、基金会保管委员、理事以及副社长。

Soldiers from the Reconstruction Task Force 4 and the Mentoring Reconstruction Task Force conduct handover patrols in the streets of Tarin Kowt, Southern Afghanistan.

士兵重建工作队4和指导重建工作队进行交接巡逻在街头的塔林Kowt ，阿富汗南部。

A young Afghan boy watches as soldiers from the Reconstruction Task Force and the Mentoring Reconstruction Task Force patrol past on a handover patrol in Tarin Kowt, Oruzgan Province.

一位年轻的阿富汗男孩手表作为士兵的重建工作队和传帮带重建工作队巡逻过去移交巡逻队在塔林Kowt ，乌鲁兹甘省。

Corporal Andrei Mazourenko conducts his final patrol with the Reconstruction Task Force before handing over to the Mentoring Reconstruction Task Force in Tarin Kowt, Oruzgan Province.

下士安德烈Mazourenko进行他的最后巡逻与重建工作队前交给导师重建工作队在塔林Kowt ，乌鲁兹甘省。

Task of a key, two research achievement, this is research center of economy of state committee of planning introduces competitive mechanism to be in task research, produce the specialty with respective researcher adequately, one when undertake tries benignantly.

一个重点课题，两份研究成果，这是国家计委经济研究中心为了在课题研究中引入竞争机制，充分发挥研究人员各自的特长，进行的一个有益尝试。

Internet-Drafts are working documents of the Internet Engineering Task Force, its areas, and its working groups.

互联网工作文件草稿的互联网工程任务组，其职权范围内，它的工作组。

Internet Engineering Task Force Internet protocols in large measure are descriptions of textual formats.

互联网协议在很大程度上是说明文字的格式。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。