cephalic reference system

system for description of the head relative to certain parallel planes

en-US/səˈfælɪk ˈɹɛfɹəns ˈsɪstəm/
en-GB/sɛˈfælɪk ˈɹɛfɹəns ˈsɪstəm/

دسته بندی ها:

coordinate system