查询词典 lightning-rod

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个人用品：高尔夫球(14种)、捞球器(16种)、小球袋、画球器、印球器、吸球座、高尔夫鞋、鞋钉、取钉器、帽子、手套、毛巾、伞、望远镜测距仪、测速测距仪、手提袋、冰袋、球托架、球托TEE (8种)、高尔夫工具、配重铅条、球展示柜等；3、高尔夫礼品：推杆器礼品套装、折合杆精装、高尔夫挂表、香表座、桌上用品、奖杯、高尔夫画等；4、球具及相关配套件：球具、特色杆、握把、胶套、球杆、铁杆架、球具架、推杆夹、球头、球头套、球袋、球袋挂牌、枪袋、球包外套、球包雨罩等；5、球具检测维修生产设备：假平衡秤、级数板、扭力测量器、退杆机、磨杆机、球头烤箱、球杆烤箱、喷漆台、装握把机等

Through an analysis of the electromagnetic force on the electric heated rod, the authors work out the equation for calculating the electromagnetic force on unit area of the rod, and indicate that radial vibration of 100Hz will occur when the rod is in operation, which have little effect on the strength and sealing of the rod owing to minor amplitude.

电热杆的交流阻抗远大于导线的电阻，因此主要发热体为抽油杆，可快速有效地加热杆外的原油，而导线不会过热，有利于导线的绝缘与保护。通过对电热杆所受电磁力的分析，推导出了抽油杆内表面单位面积上所受电磁力的计算公式，从而得知电热杆工作时将产生沿径向向外的径向振动，振动频率为100Hz。但由于振幅较小，这种振动不会对抽油杆的强度和密封产生明显的不利影响。

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 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。

Combine with the analysis of the effect that caused by the shielding of topography and the conditions when lightning occurred on the top of the transmission tower, this paper bring forward a synthetical scheme that on the AnNan overhead transmission line, can use long life resistance reducer to reduce the ground resistance of the transmission tower,set up a shielding pull- line on the body of some tower,set up lightning arrester and take unbalance insulated method to improve the level of the line's ability of preventing lightning.

结合地面屏蔽效果分析和雷击杆塔塔顶情况分析，提出了在安南线采用降低杆塔冲击接地电阻、对部分杆塔塔身安装防雷拉线、加装线路避雷器、在双回路共架杆段采用不平衡绝缘配置等措施来提高安南线耐雷水平的综合方案。使用长效降阻剂，降低杆塔的接地电阻，这是提高线路耐雷水平、降低雷击跳闸率的有效措施。

The results indicate:1 There are limitations to protect 110kV Kang-Ping transmission line and 220kV Da-An transmission line lightning, and the line-surge arrester can improve the lightning-proof property of transmission line on mountainous area and enhance the lightning-withstand level.2 Tower grounding resistance, distance between towers, etc can affect the function of line-surge arrester.

110kV康平线和220kV大安线已有的防雷措施不够理想，而加装了线路型避雷器后能明显改善山区输电线路的防雷性能，提高输电线路耐雷水平。2）输电线路的接地电阻，线路档距等因素对线路型避雷器的应用有影响。

First, the paper studies the physical process of lightning, and makes comparison among the existing lightning location systems. It also puts forward the ideas of an advanced lightning location system to further improve the sub-station distance error, and introduces the research emphasis of the paper.

首先，对闪电这一物理过程进行了研究，比较了现有的雷电定位设备，为了进一步提高单站定距精度，提出了一种新型的闪电定位设备的研制设想，并对本文的研究重点做了介绍。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。