down conductor meaning in English
避雷线的垂直部分
引下线
Examples
- The research shows that the protection of the industrial control system are not only need the external lightning protection system such as air terminals , down conductors and grounding system , but also need the internal lightning protection system such as equipotential bonding , shielding and surge protection of information system and electrical system
经研究，对工业控制系统的防雷保护不仅要做好接闪器，引下线，接地体等基本的外部防护，还要做好等电位联结，屏蔽，信号系统和电源系统的电涌保护等相关内部防雷措施。