From Hales method, reversed refracted wave 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。
When a sound wave passes through non-uniform temperature fields, it will be refracted and its travel path will be bended.
当声波在非均匀温度场中传播时会因声波的折射而导致声波路径弯曲。
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。
When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.
当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。
When a radio signal (an electromagnetic wave) propagates into the ionosphere, it might be absorbed, attenuated, refracted, or it might shoot right through and out into space.
当一个无线电信号(电磁波)传播进入电离层时，它也许会被吸收、削弱、折射，或者会穿透并进入太空。
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