The activation energies of the reaction in the absence of catalyst and in thepresence of zinc chloride were 51.3 and 8.3kJ/mol respectively.是什么意思_The activation energies of the reaction in the absence of catalyst and in thepresence of zinc chloride were 51.3 and 8.3kJ/mol respectively.在线翻译_英语_读音_用法_例句