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 77 36.7%
2 United States 59 28.1%
3 Korea, Republic of 14 6.7%
4 Lithuania 10 4.8%
5 Netherlands 10 4.8%
6 Germany 8 3.8%
7 Togo 8 3.8%
8 Sweden 7 3.3%
9 France 4 1.9%
10 Norway 4 1.9%
11 South Africa 3 1.4%
12 Taiwan 2 1%
13 Denmark 2 1%
14 India 1 0.5%
15 Russia 1 0.5%