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求雨的形成过程的作文(英语)

发表时间:2024-07-07 23:26:41 来源:网友投稿

Rainisliquidprecipitation,asopposedtonon-liquidkindsofprecipitationsuchassnow,hailandsleet.RainrequiresthepresenceofathicklayeroftheatmospheretohavetemperaturesabovethemeltingpointofwaternearandabovetheEarth'ssurface.OnEarth,itisthecondensationofatmosphericwatervaporintodropsofwaterheavyenoughtofall,oftenmakingittothesurface.Twoprocesses,possiblyactingtogether,canleadtoairbecomingsaturatedleadingtorainfall:coolingtheairoraddingwatervaportotheair.Virgaisprecipitationthatbeginsfallingtotheearthbutevaporatesbeforereachingthesurface;itisoneofthewaysaircanbecomesaturated.Precipitationformsviacollisionwithotherraindropsoricecrystalswithinacloud.Raindropsrangeinsizefromoblate,pancake-likeshapesforlargerdrops,tosmallspheresforsmallerdrops.

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