cuprammonium fibre 铜铵纤维...cuprammonium silk 铜铵丝...cuprammonium cellulose complex 铜铵纤维素络合物...cuprammonium sulfate 硫酸铜胺;硫酸四氨合铜...cuprammonium solution 铜铵液...cuprammonium washing tower for removing CO 铜洗塔...
交流互动
发表言论