• 华沙条约各国铁路系统轨距已经标准化

    On the rail system within the countries of the Warsaw Pact, gauges had been standardized.

    youdao

  • 华沙条约各国铁路系统轨距已经标准化

    On the rail system within the countries of the Warsaw Pact, gauges had been standardized.

    youdao

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