BPG致力于知识的发现和传播
Total Visits of This Article
2017 | 总访问次数
排名 国家/地区 数量 占比
1 United States 32 37.6%
2 China 23 27.1%
3 Germany 15 17.6%
4 Korea, Democratic People's Republic of 8 9.4%
5 Nigeria 4 4.7%
6 Taiwan 1 1.2%
7 India 1 1.2%
8 Ireland 1 1.2%