Warning: file_put_contents(): Only 0 of 6800 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/69228.com/index.php on line 55 enumeration district是什么意思，enumeration district的翻译，enumeration district音标、读音、用法和例句_魏碑心思朗文词典
Choropleth maps: Mapping data collected in enumeration units, such as country, province and district, by shading them according to a variable or attribute. 面量图：根据该空间单位的数值涂上不同颜色，地图数据多由国家、省份或地区等单位收集得来的。