您要查找的是不是：
- lightning protection grade 防雷等级
- Common lightning protection measures often are not sufficient. 通常的防雷措施经常是不充分的.
- Protection Grade: IP64, rainproof, dustproof and shockproof. 防护等级：IP64，防雨、防尘、抗冲击；
- Does the site have a Lightning Protection System in place? 现场是否安装有雷击保护系统?
- Lightning protection for wind turbine systems TS Ed. 风力发电机组防雷。
- This method provided a new basis to nickel coating protection grade rating. 该方法为镀镍层腐蚀“保护”等级评定提供新的依据。
- WARNING! Roof top antennas of any sort should have lightning protection. 警告!任何一个安装在屋顶顶面的天线都应该有雷电保护。
- The products can withstand the corrosion of strong acid, strong acid, strong alkali, salt, anti-corrosion is F2, protection grade reaches IP65. 本产品抗强酸、强碱、盐腐蚀，防水、防尘，防腐等级为F2，防护等级为IP65。
- The concept of "equipotential bonding" is very important in EMC and lightning protection design. 在防雷和电磁兼容设计中,等电位连接是非常重要的概念。
- With the special design of outdoor water-proof, protection grade up to IP64, dustproof, shockproof and tolerance to severe weather. 专用户外防水设计，防护等级可达到IP64，防尘、防冲击、耐恶劣天气；
- Keywords： LEMP, Grounding, equipotent bonding, general lightning protection, classifying lightning protection. 叙词：雷击电磁脉冲，接地，等电位连接，整体防雷，分级防雷
- Keyword：LEMP, Grounding, equipotent bonding, general lightning protection, classifying lightning protection. 叙词：雷击电磁脉冲，接地，等电位连接，整体防雷，分级防雷
- I also distribute British American FURSE ESP series, and Lightning Protection Products EFI, you are welcome to inquire! 我公司同时经销英国FURSE ESP系列和美国EFI防雷产品，欢迎您来电咨询！
- In order to find the corrosion protection grade of the nickel coating exactly, the computer image processing techniques were used to detect corrosion features in nickel coating. 摘要为了能够准确地得到镀镍涂层腐蚀“保护”等级，利用计算机图像处理技术对镀镍层腐蚀图像的腐蚀特征进行检测分析。
- Through over voltage on-line monitoring device testing, inquire into lightning protection of the reactor with air core. 并通过安装过电压在线监测装置进行测试的方法,初步探讨了空心电抗器防雷的作用。
- Insect endangerment categories and protection grades. 昆虫濒危等级和保护级别。
- The installed lightning protection devices shall meet the operational specifications set by the competent meteorological department under the State Council. 安装的雷电灾害防护装置应当符合国务院气象主管机构规定的使用要求。
- RESEARCH ON LIGHTNING PROTECTION OF 110-220kV TRANSMISSION LINES WHERE EASY TO BE SUFFERED BY LIGHTNING STRICK IN ROCK MOUNTAINOUS AREA. 石山地区110~220kV输电线路易击杆塔的防雷措施研究
- Horvath, Tibor, Computation of Lightning Protection, Taunton, Somerset, England: Research Studies PressLtd, pp. 22-147, 1991. 王时煦，马宏达，陈首新，”建物防雷设计”，中国建筑业出版社，1980年9月第49-54页。
- Directed against the impact of the automation systems,we propose the concept and protection measures about the lightning protection. 针对雷电电磁脉冲对自动化系统所带来的影响,提出了雷电防护的概念和防护方法。
