The scale rank of non-agricultural population in the cities appears to be the first-place distribution with obvious gradations.
其城镇非农业人口规模等级为首位型分布，具有明显的层次性特征。
It is necessary to build animal disease information system to dynamic monitor and predict such as HPAI and FMD disease taking place, distribution, propagation.
构建动物疫病信息系统来动态监控预测诸如禽流感、口蹄疫等疾病的发生、分布、蔓延已成必要。
It is necessary to build animal disease information system to dynamic monitor and predict such as HPAI and FMD disease taking place, distribution, propagation.
构建动物疫病信息系统来动态监控预测诸如禽流感、口蹄疫等疾病的发生、分布、蔓延已成必要。
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