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 468 52.6%
2 United States 164 18.4%
3 Netherlands 120 13.5%
4 Germany 65 7.3%
5 Canada 18 2%
6 India 10 1.1%
7 Sweden 10 1.1%
8 France 7 0.8%
9 Taiwan 5 0.6%
10 Singapore 5 0.6%
11 Japan 4 0.4%
12 Korea, Republic of 2 0.2%
13 Australia 2 0.2%
14 Russia 2 0.2%
15 Serbia 2 0.2%
16 Ukraine 2 0.2%
17 United Kingdom 2 0.2%
18 Hong Kong 1 0.1%