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.
这种轻触型工具播放的近距离图像是在0.4英寸的微小型显示器上反射的激光形成的，使用全息摄影术以保持图画尽管在投影尖角上依然聚焦。
The Light Touch casts a big image from up close by bouncing lasers off a 0.4-inch microdisplay, using techniques from holography to keep the picture in focus despite the sharp projection angle.
颗粒会反射闪射的激光，这样高速的摄像机就可以跟踪拍摄。
The particles reflect light from flashing lasers, so they can be tracked using high-speed cameras.
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