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 46 49.5%
2 China 21 22.6%
3 Germany 14 15.1%
4 Nigeria 4 4.3%
5 Canada 2 2.2%
6 Korea, Republic of 2 2.2%
7 Netherlands 1 1.1%
8 India 1 1.1%
9 Taiwan 1 1.1%
10 United Kingdom 1 1.1%