1995—2015年美国钴物质流演变
刘立涛, 赵慧兰, 刘晓洁, 代涛, 刘刚

Cobalt material flow in the United States from 1995 to 2015
LIU Litao, ZHAO Huilan, LIU Xiaojie, DAI Tao, LIU Gang
图5 1995-2015年美国终端消费存量变化
Figure 5 Variation of in use stock in the United States