查询词典 lightning-rod

The status of lightning protection and problems, especially low insulation level of lines, lack of direct lightning protection measures, misemploy of lightning arrester and imperfect earth are discussed. Associative action of lightning overvoltage may be considered as the main ...

在此基础上提出了综合防雷措施(包括规范避雷器的安装维护、改善避雷器和杆塔接地、使用塔顶避雷针、使用自动消弧装置降低配电网建弧率、限制雷电流过后的弧光接地过电压和铁磁谐振过电压等)，以提高配电网耐雷水平和供电可靠性。

In this paper, a brief analysis of the mechanism of overhead insulating conductor broken by lightning was introduced, and some detail information about the structure and principle of some anti-lightning broken device, such as over-voltage protector, arc-protection hardware and FLC-B lightning-protection hardware. And some electrical tests and analysis were done to these devices, after multi-comparison of those devices' performance, some specific measures are proposed against lightning broken.

本文简要分析了架空绝缘导线雷击断线的机理，详细介绍了过电压保护器、防弧金具和FLC-B型防雷金具等常用防止架空绝缘导线雷击断线装置的结构和工作原理，并对这些装置进行各种电气试验与分析，综合比较各种装置的性能之后，提出了10kV架空绝缘导线防雷击断线的具体措施。

Through the analysis of inspection and test results of lightning proof safe facilities and equipments of a certain ammunition depot ,deficiency and problems are found in the construction and setting of lightning proof safe facilities such as geographic position,lightning proof device,grounding device,and height of safe lightning conductor based on formula.

针对这些问题，提出防雷装置设置的改进措施，以期为弹药仓库防雷安全提供理论和技术的参考。

By force of lightning can hurt men, ignite building, and lightning can breakdown electric power, telephonic and computer, even attack the computer network. Then, lightning is a phenomenon of nature which happen year after year. Therefore, the disaster of lightning is sure to have an effect on Chinese development about social and economy.

由于雷电能造成人员伤亡，能使建筑物起火、击毁，能对电力、电话、计算机及其网络等设备造成破坏，雷电又是年年重复发生的自然现象，因此雷电灾害势必对我国的社会与经济发展造成一定的负面影响。

This paper discusses the characteristics of the mobile communication base station struck by lightning,the choice of performance parameters of the base station lightning protector,the installation and employment of lightning protector,and the way of putting up wires externally concerning lightning .

防雷工作是一项复杂的系统工程，通信基站的防雷措施应建立在综合治理、联合接地、均压等电位的基础上，文中仅就移动通信基站遭受雷击的特点，基站防雷器性能参数的选择，防雷器的安装使用，以及通信基站的一些与防雷相关的外部进线方式进行论述并提出几点建议。

After the observing of transmission line for a lightning storm season, we didnt find the lightning trip. The result indicates line-surge arrester can improve lightning-proof property evidently and reduce the lightning tripping outage.

通过两个雷雨季节的观察，发现110kV双含线与110kV双海线没有再发生雷击跳闸故障，表明了线路型避雷器能明显改善山区输电线路的防雷性能，降低输电线路的雷击跳闸率。

After the observing of transmission line for a lightning storm season, we didnt find the lightning trip. The result indicates line-surge arrester can improve lightning-proof property evidently and reduce the lightning tripping outage.

通过两个雷雨季节的观察，发现110kV康平线与220kV大安线没有再发生雷击跳闸故障，表明了线路型避雷器能明显改善山区输电线路的防雷性能，降低输电线路的雷击跳闸率。

Combining the actual present situation of lightningproof devices in flammable and explosive place,and according to the work principle of independent lightning rod,the examination technology and method of independent lightning rod in flammable and explosive place were proposed.

结合目前易燃易爆场所防雷装置的实际现状，根据独立避雷针的工作原理，提出了易燃易爆场所独立避雷针的检测技术和方法，指出独立避雷针应该计算它到被保护建筑物及其有联系的管道、电缆等金属物之间的安全距离和有效保护范围，检测接地电阻值，应具备良好的防腐、焊接效果，该检测方法为各级防雷检测机构或单位自检提供了借鉴。

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。

When replacing, firstly, demount the shelters at both ends and the collet of silicon carbide rod, then take out the damaged silicon carbide rod, to be careful when install it, for the silicon carbide rod is easy to be broken. The parts of both ends exposed out of the furnace plate shall be equal, and the collet must be firm, make it well contact with the silicon carbide rod.

更换时先卸下两端保护罩与硅碳棒夹头，然后取出已损坏的硅碳棒，由于硅碳棒易断，安装时须小心，两端露炉壳外部分应相等，夹头必须紧固，使之与硅碳棒接触良好。

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。