Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The usually adopted coordinate system. O:The origin of the Body Coordinate System. It is defined as the midpoint of the line 7-9, Y axis: (VCSL-Vertical Central Sacral Line) Vertical line passing through O, X axis: Horizontal line passing through O, Z axis: Forms with X a horizontal plane (see also SOSORT Conclusion 3.1).
