镜子反光。
Most lasers use silicon mirrors to bounce light wavelengths back and forth, but silicon can't reflect powerful X-rays.
目前大多数激光器是用硅来做反射镜，来来回回地反射激光X射线，但硅反射镜不能反射功率大的X射线。
Underground offices in Japan are being equipped with "virtual" Windows and mirrors, while underground departments in the University of Minnesota have periscopes to reflect views and light.
在日本的地铁官员装备了虚拟窗户和镜子，当地铁部门在明尼苏达州大学展示风景和照明。
Underground offices in Japan are being equipped with "virtual" Windows and mirrors, while underground departments in the University of Minnesota have periscopes to reflect views and light.
在日本的地铁官员装备了虚拟窗户和镜子，当地铁部门在明尼苏达州大学展示风景和照明。
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