openlayers素材网站 1.教程网站 http://weilin.me/ol3-primer/ch05/05-03.html 2.特效气象图 https://earth.nullschool.net/zh-cn/#current/wind/surface/level/orthographic=-236.16,117.94,326/loc=-141.432,-38.731 3.超图 http://support.supermap.com.cn/