There are several alternate means of transmitting electric power, for example, by alternating or direct current, overhead or underground cable, and all over a wide range of voltages.

有多种送电途径可选择，例如由交流或直流，架室线或地下电缆送电并有各种电压等级。

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The contract is part of a larger scheme that includes a 400-kv ac (alternating current) substation in Finnbole, a 70 - km DC overhead line in Sweden and a 200-km submarine cable.

该合同是一个更大计划的一部分，这个计划包括一个位于Finnbole的400千伏交流变电站，一个位于瑞典境内的70千米直流高架线，以及一条200千米的海底电缆。

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