This paper presents an experimental investigation of refrigeration system dynamics during the reverse-cycle defrost of an air-source heat pump chiller.

本文针对风冷热泵冷热水机组的逆循环除霜进行了实验研究，得到了除霜时系统参数随时间的变化规律。

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The enterprise has to face the reverse logistics business when its responsibility extending to the whole products life cycle with the marketing development.

逆向物流是在市场逐步成熟，企业责任扩大到整个产品生命周期时，企业不得不面对的一个问题。

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Designing the die by reverse solution is an important means to speed up the development cycle of die, to increase the product quality and moreover, to establish our own design and manufacture system.

利用反求方法的设计是缩短模具开发周期、提高产品质量及建立自主设计制造体系的重要手段。

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"There is other research out there pointing out that this storage may be part of a natural cycle that will eventually reverse, either due to El Nino or the so-called Atlantic Multidecadal Oscillation, and therefore may not imply what the authors are suggesting, " he said.

BBC: Science & Environment