Ọkụ egwuregwu Stroboscopic Mmetụta Hazard
Stadium Lighting Stroboscopic Effect Hazard Nke mbụ, ihe ize ndụ stroboscopic nke ọkụ ime ụlọ ime ụlọ tenis, badminton, basketball, volleyball na ebe egwuregwu tenis, imewe ọkụ egwuregwu ga-enwerịrị.
lee nkọwa