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人工增雨
desert. artificial rainfall
environ. precipitation enhancement Increase of precipitation resulting from changes in the colloidal stability of clouds. This can be either intentional, as with cloud seeding, or unintentional, as with air pollution, which increases aerosol concentrations and reduces sunlight (增加降雨,主要是借助云层胶体稳定性的变化造成降水。这可以刻意为之,如在云层散步降雨剂,或无意的,如空气污染,气溶胶浓度的增加,减少了阳光照射。)
tech. artificial precipitation enhancement