| 摘要 |
A system (300), comprising: a track (310) to be positioned proximate a structure (305), the track (310) having a length (L) extending along a first axis (315); and a location indicator (320) positioned along the length (L) of the track (310), wherein the location indicator (320) provides a unique tag which identifies a location of the location indicator (320) along the first axis (315). |
