小冰晶是的小冰晶融合一起成了大冰就不是了我觉得你还是回答是比较好
whenliquidwaterstartsfreezing,thephasechangebeginswithsmallicecrystalsthatgrowuntiltheyfuse,formingapolycrystallinestructure.Inthefinalblockofice,eachofthesmallcrystals(called"crystallites"or"grains")isatruecrystalwithaperiodicarrangementofatoms,butthewholepolycrystaldoesnothaveaperiodicarrangementofatoms,becausetheperiodicpatternisbrokenatthegrainboundaries.
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