When a transmission line fault occurs, the violent fluctuations of system variables are first suppressed with the aid of electric power equilibrium.

在输电线路发生故障时，首先通过电功率平衡抑制各变量的剧烈波动；在此基础上再用汽门励磁协调控制器镇定系统。

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There would be more investment--more steady investment--if there weren't such violent fluctuations in oil prices.

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