Ground source heat pumps are recognized as one of the most efficient heating and cooling systems on the market.

地源热泵是公认的最有效的加热和冷却系统的一个市场上。

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Photos posted by Chinese media showed iron pipes and concrete slabs lying on the ground inside the large cooling tower.

中国媒体发布的照片显示，铁管和混凝土板四散在一座大型冷却塔内部的地面上。

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Application: Conceret cooling, Chemical processing, Fishery Port, and Artificial skiing ground.

应用：混凝土，大型化工，渔港，人工滑雪场。

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To keep things safely frozen, cooling systems have been installed in the ground.

ECONOMIST: Tibet is linked to the rest of China

Dr Cirac and Dr Romero-Isart therefore propose putting the virus inside a microscopic cavity and cooling it down to its state of lowest energy (ground state, in physics parlance) using a piece of apparatus known as a laser trap.

ECONOMIST: An old thought experiment may soon be realised

Dr Duif rules out a third explanation, too: that cooling of the Earth's crust due to the eclipse shadow causes the ground to tilt slightly, and thus distorts the results.

ECONOMIST: Gravitational anomalies