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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