The basic principle of earthing transformer is analysed. A proper capacity calculation method for earthing transformer is introduced. The calculation example is given too.

分析了接地变压器的基本原理，介绍了一种比较合理的接地变压器容量计算方法，并给出了计算实例。

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"Once the infrastructure is there, once you have the proper capacity building, you can have real growth, with exponential figures, " he said.

UNESCO: Communication and Information

The government's consultation document rightly suggests that, to make better use of airport capacity, a proper market should be created and available slots should be auctioned.

ECONOMIST: Aviation: The problems stack up | The

And in the next version of the National Infrastructure Plan, it might want to provide a proper vision for the development of the country's infrastructure networks covering energy generation and transmission, South East runway capacity, national and international freight connectivity and high-speed communication networks.

BBC: Business