文化意义上

PRT considers all incident lighting from the upper hemisphere on each point of the surface resulting in smooth shadow. In this method, by considering the way light source is blocked by other objects and how it reflect on object surfaces, one can create self-shadowing and self-interreflection effects.

PRT因为考虑物体每一个表面点单独受到四面八方光线的影响，因此所呈现的明暗效果非常平滑，同时此光照技术也能够考虑每一个表面点光源被物件其他部分遮住的情形以及受到其他物件反射光线之影响，因此能够表现从来无法以及时运算呈现的自身阴影与反射光。

Investigations and experiments indicate that charring ablator s provide the most efficient thermal protection shield for the re-entry vehicles.

载人飞船返回舱的烧蚀热防护技术研究和试验表明，碳化烧蚀材料是再入飞行器最有效的热防护层。