The variation of specific surface area and chemical reactivity of nano KH particles treated at different temperatures has been studied.

考察了纳米尺寸的KH颗粒在不同温度热处理后比表面积的变化及其与化学反应活性之间的关系。

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And it's believed that the high chemical reactivity of the surface is due to the deposition of chemically active gases from the atmosphere onto the surface, gases like hydrogen peroxide and ozone.

NPR: Revisiting the Viking Missions to Mars