[结构](%E7%89%A9%E4%BD%93%E6%95%B0%E6%8D%AE/%E7%BB%93%E6%9E%84.md) [通用参数](%E7%89%A9%E4%BD%93%E6%95%B0%E6%8D%AE/%E9%80%9A%E7%94%A8%E5%8F%82%E6%95%B0.md) [基础物体](%E7%89%A9%E4%BD%93%E6%95%B0%E6%8D%AE/%E5%9F%BA%E7%A1%80%E7%89%A9%E4%BD%93.md) [外部三维模型](%E7%89%A9%E4%BD%93%E6%95%B0%E6%8D%AE/%E5%A4%96%E9%83%A8%E4%B8%89%E7%BB%B4%E6%A8%A1%E5%9E%8B.md)