Nano material performances can remarkably improve the physical properties and performances of the refractory material due to its surface effect, quantum size effect and tunnelling effect.

纳米材料由于具有表面效应、量子尺寸效应和隧道效应，以添加剂的形式加入耐火材料中，可显著提高耐火材料物理性能和使用性能。

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If it has an atmosphere like Earth's, with a corresponding greenhouse effect, its average surface temperature would be a balmy 22C.

BBC: Viewpoint: The obsession with a 'twin Earth'