查询词典 lightning

Considering the factors such as randomness of natural lightning locus and the coexistence of primary and secondary leaders, it is necessary to lead in the concept of dynamic lightning protection shielding angle. It is suggested that the angular bisector of practical protective angle formed by ground wire or earth pin in UHVAC transmission line and conductor should be aligned with the direction of lightning leader as well as the ratio of vertical span to horizontal span and the impact of wind speed should be considered.

考虑自然闪电轨迹的随机性和雷电主先导与次先导并存现象等因素，有必要引入动态防雷保护角概念，建议特高压交流线路中地线对导线的实际保护角形成的角平分线应与雷电先导的来向一致，并应计及垂直档距和水平档距的比值和风速的影响。

In South China where lightning is rather active, the tripouts of UHV transmission lines, which are caused by the failure of lightning shielding , frequently occur, so it is necessary to research the lightning shielding performance of UHV transmission line in depth.

雷害是输电线路故障的主要原因，在我国南方多雷地区，超高压输电线路频繁发生雷电屏蔽失效引起的跳闸，有必要更深入地研究超高压输电线路的雷电屏蔽性能。

One of the company's main product —— the thunder and lightning radiation monitor meter and the thunder and lightning localization monitor system advanced technology has walked in the international front row, and success obtained 2008 Beijing Olympic Games' order form, it will be used in the stadium hall thunder and lightning harm to monitor and forewarn, protect the sport star athletes and the audiences safety.

公司的主要产品之一——雷电辐射监测仪和雷电定位监测系统的先进技术走在了国际前列，并成功获得来自2008年北京奥运会的定单，用于体育场馆的雷电危害监测和预警，保护体育健将和观众们的生命安全。

The Application of Graphic Solution in Industrial Design;2. A graphic solution to ensuring the protection range of lightning rod is put forward instead of the complicated formulas,and the methods are discussed of the protection zone of single lightning rod,double and four lightning rods.

针对避雷针设计过程中计算公式过于复杂的问题，提出了利用平面几何作图求解避雷针联合保护范围的方法，给出了单支、双支和四支避雷针保护范围的作图解题步骤，并利用计算机图形仿真，给出了避雷针保护范围的空间结构图形。

A graphic solution to ensuring the protection range of lightning rod is put forward instead of the complicated formulas,and the methods are discussed of the protection zone of single lightning rod,double and four lightning rods.

针对避雷针设计过程中计算公式过于复杂的问题，提出了利用平面几何作图求解避雷针联合保护范围的方法，给出了单支、双支和四支避雷针保护范围的作图解题步骤，并利用计算机图形仿真，给出了避雷针保护范围的空间结构图形。

The lightning disaster existed widely and hazardously however its influence on electronic information system for mine has not aroused great attention yet The paper expatiates on the lightning harm to electronic information system and relevant technical standards so as to enhance the understanding of lightning protection of electronic information system for mine .

在分析雷电对电子信息系统入侵途径及危害基础上提出防护系统技术要求，以提高人们对矿山电子信息系统雷电防护的认识。

The influence of the line arrester on the lightning withstand level of 35kV transmission lines was simulated and calculated by electromagnetic transient software ATP-EMTP. The results show that the joining of line arrester can obviously improve the lightning withstand level of 35kV transmission lines, and is especially effective when the lightning directly strikes the conductor.

计算结果表明，在"易击段"架设线路避雷器后，可明显提高35kV输电线路的耐雷水平，尤其雷直击导线时，线路避雷器的作用效果更加明显；雷击杆塔塔顶时，杆塔接地电阻是影响35kV输电线路耐雷水平的重要因素。

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。

Life. But the intrinsic way of the Internet by wire confines accessing and using of the network information.

然而，Internet固有的有线连接方式大大限制了人们对网络信息的访问和使用。

I have a strong persuasion that this is true .

我坚信这是正确的。