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 817 59.5%
2 United States 212 15.4%
3 Netherlands 139 10.1%
4 Germany 67 4.9%
5 France 47 3.4%
6 Canada 34 2.5%
7 Sweden 13 0.9%
8 Hong Kong 11 0.8%
9 Korea, Republic of 10 0.7%
10 United Kingdom 6 0.4%
11 Serbia 4 0.3%
12 Singapore 4 0.3%
13 South Africa 2 0.1%
14 Taiwan 2 0.1%
15 Norway 2 0.1%
16 Russia 1 0.1%
17 Mauritius 1 0.1%
18 Ukraine 1 0.1%