若干条款似乎同意上米4326被用来作为距离单位。

Several articles seem to agree on meters being used in 4326 as the unit of distance.

WGS 84米，要做的事，这可能是为什么这款采用米。

WGS 84 is done in meters as well, which is probably why this uses meters.

HTTP：/ /blogs.msdn.com/b/adonet/archive/2011/06/30/walkthrough-spatial-june-ctp.aspx
的http://www.jasonfollas.com/blog/archive/2011/07/20/entity-framework-spatial-第一look.aspx
http://blog.simplecode.eu/post/DistancesWithDbGeographyAndDbGeometry