cephalic reference system

system for description of the head relative to certain parallel planes

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

カテゴリ：

coordinate system