A SIMPLE KEY FOR XREADU.COM UNVEILED

X-ray beams pass through the human body. These beams are absorbed in different amounts depending on the density of the material they go through. Dense materials, like bone and metallic, exhibit up as white on X-rays. The air in the lungs displays up as black. Fat and muscle mass surface as shades of gray.?�과?�인 축구 ?�비 기술 마스?