在空间数据的更新过程中，需要利用多种数据源对现有数据进行更新，这样可能会导致在获得的空间数据中出现重复记录。

During the course of updating of spatial data, we need to use kinds of data sources, which may lead to duplicate records.

youdao

在空间数据的更新过程中，需要利用多种数据源对现有数据进行更新，这样可能会导致在获得的空间数据中出现重复记录。

During the course of updating of spatial data, we need to use kinds of data sources, which may lead to duplicate records.

youdao