BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 176 65.9%
2 United States 51 19.1%
3 Germany 26 9.7%
4 Russia 5 1.9%
5 United Kingdom 2 0.7%
6 Ireland 2 0.7%
7 Korea, Republic of 2 0.7%
8 Moldova, Republic of 1 0.4%
9 Netherlands 1 0.4%
10 Singapore 1 0.4%