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 242 63.7%
2 United States 49 12.9%
3 Germany 37 9.7%
4 France 23 6.1%
5 Russia 8 2.1%
6 United Kingdom 4 1.1%
7 Canada 3 0.8%
8 Singapore 3 0.8%
9 Sweden 2 0.5%
10 Netherlands 2 0.5%
11 Philippines 2 0.5%
12 Japan 2 0.5%
13 Korea, Republic of 2 0.5%
14 Moldova, Republic of 1 0.3%