自己做的一个GIS作品，实现了放大、缩小、 移动、定位等基本功能外，还实现了一些图层的相关操作。.. -have done a GIS works, achieving zoom in and out, mobile, basic features, such as positioning, also achieving some layers of operation. ..

自己做的一个GIS作品，实现了放大、缩小、 移动、定位等基本功能.. -have done a GIS works, achieving zoom in and out, moving, positioning the basic function ..

实现了放大、缩小、 移动、定位等基本功能外，还实现了一些图层的相关操作。.. -achieved to zoom, move, basic features, such as positioning, but also to achieve some layers of operation. ..