二价铜离子 meaning in Chinese

double-charge copper ion

Sung - tao lee , fwu - long mi , yu - ju shen and shin - shing shyu , “ synthesis of chitosan - tripolyphosphate chelating resin and its adsorption properties for the treatment of copper ( ii ) irons , proceedings of the 21th roc polymer symposium ( 1998 )
糜福龙,李松涛,沈玉如,几丁聚醣-藻醣酸与几丁聚醣-三聚磷酸螯合型树脂对二价铜离子吸附性质研究,第二十三届废水处理技术研讨会( 1998 )