查询词典 lightning-rod

Applying Visual Basic ,the paper make modes of buckling ,load calculating, rod designing , sinker bar and couplings designing to realize on computer. It provides effective means for analyzing sucker rod dynamic behavior and designing rod combination in casing production well.

利用VB把建立的屈曲分析、载荷计算、杆柱设计、加重杆和扶正器设计模型编制程序实现计算机计算，为套管采油井抽油杆柱的力学行为分析和设计提供有力工具。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

Intel Corporation compound the new materials to carbon fiber through high-pressure roller press, so as to reduce the weight of the fishing rod, and make the fishing rod lighter, at the same time, increased strength and flexibility of the fishing rod, it is also a process of evolution in the fishing tackle history.

Intel公司把这种先进的新型材料经过高压滚压技术复合融合在碳纤维上，从而减轻了钓竿的重量，使钓竿更轻，同时又提高了钓竿的强度和弹性，这也是钓具史上的一次工艺进化。

YINGDAIER Company compound the new materials to carbon fiber through high-pressure roller press, so as to reduce the weight of the fishing rod, and make the fishing rod lighter, at the same time, increased strength and flexibility of the fishing rod, it is also a process of evolution in the fishing tackle history.

英代尔公司把这种先进的新型材料经过高压滚压技术复合融合在碳纤维上，从而减轻了钓竿的重量，使钓竿更轻，同时又提高了钓竿的强度和弹性，这也是钓具史上的一次工艺进化。

YINGDAIER Company compound the new materials to carbon fiber through high-pressure roller press, so as to reduce the weight of the fishing rod, and make the fishing rod lighter, at the same time, increased strength and flexibility of the fishing rod, it is also a process of evolution in the fishing tackle history.

英代尔公司把这种先进的新型材料经过高压滚压技巧复合交融在碳纤维上，从而减轻了钓竿的重量，使钓竿更轻，同时又进步了钓竿的强度和弹性，这也是钓具史上的一次工艺进化。

Comparing with conventional 1×7 mixing rod plastic optical fiber coupler using tapered mixing rod, 1×7 CMRC uses cylindrical POF as mixing rod instead of tapered POF thus eliminate the high demanding POF tapering process and lower the production cost.

由于安装成本在局域网总成本中占有相当大的比重，塑料光纤要在连接密集的局域网中取得显著的性能价格比优势，就需要有高性能价格比的光纤连接器和耦合器[2 ，3] 。

A multiclad layer optical fiber prefabricated rod includes core rod and outer clad layer; the core rod consists of core layer, inner clad layer and low-hydroxyl high-purity clad layer in sequence, and the outer clad layer includes a high-purity outer clad layer and a subhigh-purity outer clad layer.

本发明涉及光纤制造领域中一种多包层光纤预制棒及制造方法，它包括芯棒和外包层，芯棒由芯层、内包层、低羟基高纯包层依次组成，外包层分为高纯度外包层和次高纯度外包层，它解决了现有的光纤制造技术中，光纤预制棒的外包层所使用的高纯原材料比重过大，从而导致高纯原材料利用率低、制造成本高的问题。

This paper introduces lightning how to imperil and inrush air monitoring station,and the ways to avoid danger from lightning .

介绍了雷电对空气自动监测站是如何造成危害的，阐述了雷电侵入空气自动监测站的途径及防止雷击的办法。

The configuration scheme of lightning arrestor protection for converter station, the principle of insulation coordination and overvoltage protection strategy for converter station are analyzed; the parameters and characteristic of lightning arresters are calculated; after analyzing the overvoltage protection for equipments and insulation level of equipments in detail, the discharge voltage of air clearances in converter station is given preliminarily.

自2005年国家电网公司部署建设±800kV直流特高压输电工程以来，组织国内外直流专业公司、科研院所、设计单位开展了广泛的研究工作[1-5]。从主接线方案的比较、户内外直流开关场的选择到绝缘裕度的确定，都从绝缘配合设计的角度进行了研究和比较，取得了大量研究成果[6-11]。

Ron Holle is a lightning expert with Global Atmospherics, a company that runs a worldwide lightning detection network.

朗·赫利是全球大气公司研究雷击方面的专家，全球大气公司拥有全世界范围的雷击探测网络。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。