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 United States 62 40%
2 Germany 22 14.2%
3 China 19 12.3%
4 Canada 12 7.7%
5 Netherlands 9 5.8%
6 Belgium 8 5.2%
7 United Kingdom 7 4.5%
8 France 2 1.3%
9 Spain 2 1.3%
10 Poland 2 1.3%
11 Serbia 2 1.3%
12 India 2 1.3%
13 Korea, Republic of 2 1.3%
14 Malaysia 1 0.6%
15 Colombia 1 0.6%
16 Slovakia 1 0.6%
17 Sweden 1 0.6%