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 444 54.5%
2 United States 150 18.4%
3 Netherlands 84 10.3%
4 Germany 64 7.9%
5 Canada 26 3.2%
6 France 11 1.3%
7 Russia 7 0.9%
8 Brazil 6 0.7%
9 India 4 0.5%
10 Korea, Republic of 4 0.5%
11 Hong Kong 3 0.4%
12 Sweden 3 0.4%
13 Norway 3 0.4%
14 Serbia 2 0.2%
15 Ukraine 2 0.2%
16 Chile 2 0.2%