GAC Units

This feature class was developed to represent GAC (Gulf America Corporation) units and their associated attributes for the purpose of mapping, analysis, and planning. The accuracy of this data varies and should not be used for precise measurements or calculations.本要素类（feature class）专为表征GAC（海湾美洲公司，Gulf America Corporation）的各类单元及其关联属性开发，服务于制图、分析与规划工作。本数据的精度存在差异，不得用于精确测量或计算。