Altocumulus lacunosus. “An elusive prize for any cloud collector,” lacunosus clouds form when sinking pockets of air create holes in a cloud layer.

高积网状云。 “对于所有的观云爱好者来说，能欣赏到这种难以捉摸的云彩无异于恩赐，”当下沉的气团在云层中形成空洞时，网状云便出现了。

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The paper presents an imitation experiment in which solar collector and hot pump are jointed for supplying heat to evaporate cleaned water and diffuse it into air.

对采用太阳能-热泵联合供热蒸发及净化水大气扩散排放进行了模拟试验。

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