Cesium-加载地形影像(TerrainProvider) 地形加载(可以看出地形数据其实也是蛮多种多样的) http://localhost:8080/Apps/Sandcastle/index.html?src=Terrain.html 影像图加载 http://localhost:8080/Apps/Sandcastle/index.html?src=Imagery%20Layers.html