理学 路径跟踪方法 释 ray casting 光线投射 光线投射技术是基于几何光学的绘制方法的基础。它由视点出发逐像素地向外发射光线，寻找光线与场景的第一个表面交点。
计算机应用 计算机辅助设计与图形学 释文 ray casting 光线投射
- speed skating field
- speed skating long distance
- speed skating mass start
- speed skating short distance
- speed skating team distance
- speed strapdown inertial navigation system
- speed test
- speed training
- speed triangle of fluid machinery
- speedup
- speed-up rolling
- speedup theorem
- speed variation handwriting
- Speightstown
- Speiser
- speiss
- SPE Journal
- Spektr-R
- Spektr-R satellite
- Spellbound
- spelling check
- spelling dictionary
- spelling disorder
- spelling error detection and correction
- SPEM