The technique of fabricating concave gratings in PMMA by double X-ray exposures is described.
介绍了一种通过微细加工技术即二次X射线曝光制作凹面光栅的方法。
A couple of editors at Slates Double X womens site are trying to go a whole month without complaining.
女性网站SlatesDouble X的几个编辑正在尝试整整一个月都不抱怨。
A trademark used for a wide armless chair with leather cushions on a double X-shaped frame formed of gently curving stainless steel bars.
一种宽大而无扶手的椅子的商标名。该椅有双层X形框架，由细雕不锈钢条组成，上面铺有皮垫。
A trademark used for a wide armless chair with leather cushions on a double X-shaped frame formed of gently curving stainless steel bars.
一种宽大而无扶手的椅子的商标名。该椅有双层X形框架，由细雕不锈钢条组成，上面铺有皮垫。
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