埃瑞拉氏定律 Ererra′s law

　　埃瑞拉（L．Ererra）於1886niansuotichudeyouguanpeixibaofenliededinglv。cidinglvrenweixindefenliemiandemianjidexingchengjinliangdadaozuixiaochengdu。suoyixichangdepeitairongyicongyuchangzhouchuizhidezailiangzhoudengjulichufashengfenlie。