Each cylindrical wine cellar relies on the surrounding earth for its insulation and combined with an ingenious air-flow system, it requires no power to maintain its constant temperature.

每个圆柱酒窖依赖于地球周围的绝缘和系统结合为一个巧妙的气流，它不需要电力来维持恒定的温度。

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And to make electric conductor or conductor and the distance between the earth have enough insulation, used for type switch gear and other switchgear inside.

并使带电导体间或导体与大地之间有足够的距离绝缘，用于中置式开关柜及其它开关柜内。

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