编码，代码 meaning in English

cod code(-ing)

In the scheme , ugis classification and coding are divided into three steps : administrative districts are firstly classified and coded , and then street and road with the corresponding code of administrative district added , at last add the code of both the corresponding administrative district and street or road into the code of other corresponding geo - information . this method can reflect topologic relationship between objects , make a fast query and shorten the length of codes
这种绑定式的城市地理信息拓扑编码的好处是：在编码中既体现了城市地理信息之间在空间上的拓扑关系，又提高了整个系统查询和检索的速度；按行政区划和城市街道进行城市地理信息的分类与编码，代码结构清晰易懂，而且可以大大缩短编码的长度。