ER - AN OVERVIEW

When you are interested within our merchandise and want to know extra information,please go away a concept here,We'll reply you the moment we could.它具有三种同素异形体，即修饰（存在于某些物质或元素中以具有不同原子结构的性质），称为α、β和γ。Er3+/Yb3+ co-doped phosphate glass �?as being the 1540nm ey