Introduction to calculation of recovery voltage in short line fault (SLF) and theoretical analysis of the interrupter in various arcing time.

介绍开断近区故障(SLF)时恢复电压的计算和灭弧室在不同燃弧时间下的理论分析。

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The resulting furore prompted football's world governing body, Fifa, to investigate the introduction of goal-line technology, which was used for the first time in a Club World Cup match last December.

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