BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 52 69.3%
2 United States 6 8%
3 Netherlands 3 4%
4 Russia 3 4%
5 China 3 4%
6 Germany 2 2.7%
7 Ireland 2 2.7%
8 United Kingdom 2 2.7%
9 Brazil 1 1.3%
10 Korea, Republic of 1 1.3%