When the partial pressure of oxygen was less than 0.3 atm the reaction orders of acrolein formation and of propylene consumption were 0.4 and 0.5 for oxygen respectively.是什么意思_When the partial pressure of oxygen was less than 0.3 atm the reaction orders of acrolein formation and of propylene consumption were 0.4 and 0.5 for oxygen respectively.在线翻译_英语_读音_用法_例句