The improvement field emission by Hf coating on CNTs surface is attributed to the low work function, chemical inertness and good conductivity of HfC.是什么意思_The improvement field emission by Hf coating on CNTs surface is attributed to the low work function, chemical inertness and good conductivity of HfC.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句