再举一个电力方面的例子，早在1900年，交流电标准发布以来，成千上万的小型电力公司合并成了大型的控股公司。

Or electricity. In the early 1900s, after the standardization to alternating current distribution, hundreds of small electric utilities were consolidated into huge holding companies.

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选择交流电作为工业标准的原因很简单，在早期供电距离很短的电网里，交流电的损耗比直流电小。

The reason was that over the short distances spanned by early power grids, AC transmission suffers lower losses than DC. It thus became the industry standard.

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交流电传动技术的不断成熟，使其真正成为所有新机车动车的标准。

With its high maturity three-phase ac drive technology has become the standard for practically all new vehicles.

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