Diffuse color reflects light that comes from one direction, so it's brighter if it comes squarely down on a surface that if it barely glances off the surface.
漫射光色反射从一个方向来的光，因此对于径直照射的表面来说就比仅是光线斜射过的表面更为明亮。
2
The diffuse material component creates a matte surface, while the emissive component creates a glowing effect.
漫反射材质组件会造成一种不光滑的表面，而放射光组件则制造出一种发光效果。
3
The reflection character of a real surface of metalwork is related to the material, light wavelength, scattering and diffuse reflection.