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 63 32.8%
2 United States 57 29.7%
3 Netherlands 26 13.5%
4 Korea, Republic of 11 5.7%
5 Germany 11 5.7%
6 Nigeria 5 2.6%
7 Russia 4 2.1%
8 United Kingdom 4 2.1%
9 India 3 1.6%
10 France 3 1.6%
11 Italy 2 1%
12 Poland 2 1%
13 Brazil 1 0.5%