To reduce the impurities and prolong the catalyst life, it is necessary to pay attention to the R ratio (H2-CO2/CO+CO2), CO/CO2 ratio and CO2 content.是什么意思_To reduce the impurities and prolong the catalyst life, it is necessary to pay attention to the R ratio (H2-CO2/CO+CO2), CO/CO2 ratio and CO2 content.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句