敦煌绿洲地下水微量元素分布特征及其成因
何建华, 秦文华, 郭嘉兵, 陈沛源, 马金珠

The characteristics of groundwater trace elements and its controlling factors in Dunhuang Oasis
Jianhua He, Wenhua Qin, Jiabing Guo, Peiyuan Chen, Jinzhu Ma
图7 Sr、Cu、Zn与SO42-的关系以及与Sr与Ca2+的关系
Fig.7 Plots of the relationships between Sr, Cu, Zn and SO42- and the plots of the relationship between Sr and Ca2+