This region in the process of the formation of precipitation, air quality will get better.

这在一定区域形成降水过程，会使空气质量变好。

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Secondly, different types of antifreeze can not be mixed use, so as not to cause chemical reactions, the formation of precipitation or bubble, reduce the use of results.

其次，不同型号的防冻液不能混合运用，以免惹起化学反响，生成沉淀或气泡，降低运用效果。

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The formation of precipitation in convective cloud with cell structure is inve-stegated, based on the fact that a cloud consists of a great deal of cells in different phases.

观测事实表明，对流云中分布着许多不同大小的云泡，本文根据这一事实讨论有云泡结构的对流云中降水粒子形成的问题。

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One way to increase the probability of rain is to seed the formation not of water droplets, but of ice crystals, an important step in precipitation.

ECONOMIST: Aerobiology

And now the Arctic's upper layers are getting less dense, for several reasons: melting Arctic glaciers, rising surface-water temperatures, increased precipitation and an absence of salt concentrations resulting from sea-ice formation.

ECONOMIST: The science