FASCINATION ABOUT ER

铒玻璃与钴尖晶石键合晶体中的铒离子提供红外波段的高效激光发射，而钴尖晶石作为调 Q 材料，能产生高功率脉冲输出“The present isn't about telling persons to eat their greens, however, if we will do this in an entertaining context, then there’s nothing much better.”Anthony Edwards was 1st choice to