We prepared two kinds of OLED devices by spin coating, which have three-layer structures[a:ITO/MEH-PPV/Al] and [b: ITO/MEH-PPV/Ca:Al].是什么意思_We prepared two kinds of OLED devices by spin coating, which have three-layer structures[a:ITO/MEH-PPV/Al] and [b: ITO/MEH-PPV/Ca:Al].在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句