Two-stage heat pump system is an important research direction which can acquire high temperature working fluid.

双级热泵系统是获得高温工质的一个重要研究方向。

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Because of the characteristic of the system, we choose Songbin Resort as object to study the double-stage heat pump system.

并以吉林市松滨度假村为研究对象，建立了该双级热泵系统的系统组成。

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Presents the two-stage heat pump test-bed designed by the authors, analyses the problem existed in experiment and offers the improving method.

介绍了自行设计的双级热泵实验系统，分析了实验中遇到的问题，提出了改进方案。

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For an hour, fireworks and heat poured off the stage.

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But five years later he died on Mont Ventoux on the 13th stage of the Tour -- the victim of heat exhaustion and a deadly cocktail of drugs and alcohol --- in a doomed and tragic bid for cycling's ultimate prize.

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In the second stage, they are supposed to explode, producing a jet of heat that burns through the armor.

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