Characterization of Ni/SiO_2 catalysts prepared with the method of chemical mixing procedure was carried out by means of BET surface area measurement, XRD and TG_DTA etc.是什么意思_Characterization of Ni/SiO_2 catalysts prepared with the method of chemical mixing procedure was carried out by means of BET surface area measurement, XRD and TG_DTA etc.在线翻译_英语_读音_用法_例句