In the research of the double absorption heat transformer, a new solution cycle is proposed by author.

在双吸收热转换器的研究中，我们提出了一种新的溶液循环方式。

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For a different solution to the same problem, a pair of New Yorkers came up with The Charge Cycle, a proposal to put phone-charging stationary bikes on street corners around NYC.

ENGADGET: Inhabitat's Week in Green: self-sustaining homes, wooden wind turbines and the world's first solar-powered nation