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 251 54.8%
2 United States 94 20.5%
3 Germany 42 9.2%
4 Netherlands 38 8.3%
5 Canada 12 2.6%
6 Ireland 6 1.3%
7 United Kingdom 3 0.7%
8 Korea, Republic of 2 0.4%
9 Iran, Islamic Republic of 2 0.4%
10 Hong Kong 2 0.4%
11 India 1 0.2%
12 France 1 0.2%
13 Russia 1 0.2%
14 Serbia 1 0.2%
15 Sweden 1 0.2%
16 Thailand 1 0.2%