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 156 54.5%
2 United States 77 26.9%
3 Germany 25 8.7%
4 Canada 12 4.2%
5 Russia 3 1%
6 Thailand 3 1%
7 Singapore 2 0.7%
8 India 2 0.7%
9 Korea, Republic of 2 0.7%
10 Netherlands 2 0.7%
11 South Africa 1 0.3%
12 United Kingdom 1 0.3%