英语翻译the small size and efficient nature of the preferred sol

英语翻译the small size and efficient nature of the preferred solid-state material,i.e.InGaN ,for the LEDs which,in turn,allows very small power suppliers to be used such as disc-shaped ciom cell batteries for powering the LEDs which,in turn,allows both the light source and power source herein to be self-contained in a highly compact housing therefor.