Public Land Survey System Townships (Feature Layer)

An area defined by the Public Lands Survey System grid that is referenced by its tier and range numbers, and is normally a rectangle approximately 6 miles on a side...由公共土地测量系统（Public Lands Survey System）网格划定的区域，以其层级（tier）与列（range）编号进行标识，通常为边长约6英里的矩形区域。