From Hales method, reversed refractedwave method shows accuracy and efficiency in detecting the thickness of remained coal seam.
以哈尔·斯法为例，将相遇折射波法用于剩余煤厚探测中，具有精确、高效、快速的特点。
2
Based on the relationship of wave vectors on crystal interface, accurate formulas calculating phase difference between two refracted waves are deduced.
基于双轴晶体折射时满足的波矢关系，导出了两折射光波相位差的精确计算公式。
3
When a sound wave passes through non-uniform temperature fields, it will be refracted and its travel path will be bended.