Experimental Study of the Cathode Electron-emission Characteristics of an Electron-emission Type High-temperature and High-pressure Electrical Precipitator是什么意思_Experimental Study of the Cathode Electron-emission Characteristics of an Electron-emission Type High-temperature and High-pressure Electrical Precipitator在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句