[3.1.1、单面建模](3.1.1%E3%80%81%E5%8D%95%E9%9D%A2%E5%BB%BA%E6%A8%A1.md) [3.1.2、双面建模](3.1.2%E3%80%81%E5%8F%8C%E9%9D%A2%E5%BB%BA%E6%A8%A1.md) [3.1.3、彩平面图建模房地产](3.1.3%E3%80%81%E5%BD%A9%E5%B9%B3%E9%9D%A2%E5%9B%BE%E5%BB%BA%E6%A8%A1%E6%88%BF%E5%9C%B0%E4%BA%A7.md)