一种地震波，其范围内的岩石颗粒随波振方向成直角振颤，这种波能穿过固体但不能穿过液体。
An earthquake wave in which rock particles vibrate at right angles to the direction of wave travel. It can travel through solids but not through liquids.
该结构用直角棱镜代替了普通的四分之一波片，提高了光学电压互感器的稳定性。
The structure substituted rectangular prism for common quarter wave, and improved the stability of the optical voltage transformer.
针对地下通道中空气冲击波的传播，通过试验研究，得到了空气冲击波在直角拐弯通道中传播的衰减系数。
This paper does research on shock wave propagation in tunnel. Decaying factors of shock wave propagation in rectangular bend tunnel were obtained by experimental research.
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