因此，这些材料就可以阻挡以热量形式存在的声子，并将它们反射回去。
That allows the material to block and reflect back the phonons in the form of heat.
小容量和狭窄的宽度可以为听众提供强有力的后期反射和良好的清晰度，尽管总的声量级有点大，这个房间当时受到了广泛的欢迎。
The low volume and narrow width would have provided strong lateral reflections and excellent clarity, albeit a somewhat loud overall level. The room was well received at the time.
当某一特定波长的激光照射声纤时，纤维震动便会改变材料的反射特性，并调节反射的激光。
When a specific wavelength of laser light is shone on them these vibrations alter the reflective properties of the material, modulating the light bouncing off them.
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