sheet lightning

noun

1. 片状闪电
   lightning that appears as a broad area of light in the sky

1. Operation sheet lightning remains on schedule.
   闪电覆盖行动仍在准备中。
2. It is a scheme often applied in the project for buildings with metal roofing to take self sheet metal as lightning receiver.
   金属屋面建筑物利用自身金属薄板做接闪器，是一种工程中常采用的方案。