Then, a supersonic air flow generator for triggering ice crystals generation in supercooled fog is designed.

然后设计了超声速气流发生装置并在过冷雾中进行触发冰晶产生的实验。

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As proved by the experiments, a number of free electrons and holes are existed in the unexposed silver halide emulsion micro-crystals. These factors are all essential to the fog center formation.

实验表明，在未经光照的卤化银乳剂微晶体中存在着一定量的自由电子和空穴，这些因素为灰雾中心的形成提供了必要的条件。

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