A shock polar theory is employed to analyze criticalangles of transition from regular refraction to irregular refraction.
运用激波极曲线理论分析不同强度的激波从正规折射过渡到非正规折射的临界角变化。
2
New concept of two criticalangles was suggested to fracture analysis of a slanted crack. A discussion was especially made of the material choice for small slant angle experiment.
本文提出并应用两个临界角的概念对斜裂纹断裂问题，特别是有关试验的选材问题进行了讨论；
3
According to ray-tracing formulas of crystal, calculated the criticalangles of Nicol prism for incident ray in any direction. Achieves the polarization critical curves of Nicol prism.