BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 China 22 31.4%
2 United States 22 31.4%
3 Germany 15 21.4%
4 Netherlands 4 5.7%
5 Republic of Korea 2 2.9%
6 Singapore 2 2.9%
7 Hong Kong 1 1.4%
8 Japan 1 1.4%
9 Korea, Republic of 1 1.4%