Clean line: an electrical power line dedicated to one machine and therefore not subject to power fluctuations.

净线：专供一部机器用的电力供应线，这样可以避免电流波动情况。

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Spiking: Inconstant surges in power on an electrical power line causing interference with sensitive electronic equipment.

电流浪行：在电线上的不稳定电力波浪，它干扰敏感的电子仪器。

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One day, big snow hit, the electrical power line broke, the hotel we stayed in lost heating, water - our cell phones even lost signals.

有一天暴雪侵袭，所有电力系统都崩溃了，我们呆的旅馆没有暖气，热水，连手机也没有信号。

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Electrical frequencies and voltages drop as power line currents increase, necessitating automatic or manual interruption of loads (blackouts) to protect grids.

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