검색
Focal point
01
a point of convergence of light (or other radiation) or a point from which it diverges
02
the concentration of attention or energy on something
03
a central point or locus of an infection in an organism
앱 다운로드
Download Mobile App
검색
a point of convergence of light (or other radiation) or a point from which it diverges
the concentration of attention or energy on something
a central point or locus of an infection in an organism