传统上，我们使用一根置于空气中的金属终端【富兰克林避雷针】和一条与集成的接地装置连在一起的下导线路来保护建筑物。
Traditionally structures have been protected by the use of air terminals (Franklin Lightning Rods) and a network of downconductors connecting to an integrated grounding system.
不过，至少有一个设施使用一个浮动的三角洲中学没有接地导线的话。
However, at least one facility used a floating delta secondary with no grounding conductor whatsoever.
静电接地导线防止柜体产生静电火花。
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