此标准的设计目的是：降低敏感设备对来自交流电源的电涌及长时延过电压的敏感性。
This standard was designed to reduce the susceptibility of their sensitive equipment to AC power line transients and long duration overvoltages.
在太平洋里大洋涌(长浪)次声观测：译解海地歌曲。
Infrasonic observations of open ocean swells in the Pacific: Deciphering the song of the sea.
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