宜宾棋牌

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                                1. 新型太阳能设备可边加热边制冷

                                  2018-04-30 11:16:46 admin
                                    中美科学家日前发表在美国《焦耳》杂志上的研究显示,他们开发出一种新型设备,在利用太阳能加热的同时,可利用辐射制冷原理制冷。在屋顶上安装这种设备有助于节约能源。

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