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 92 37.1%
2 United States 83 33.5%
3 Korea, Republic of 14 5.6%
4 Netherlands 13 5.2%
5 Lithuania 10 4%
6 Germany 10 4%
7 Sweden 9 3.6%
8 Taiwan 4 1.6%
9 France 4 1.6%
10 India 2 0.8%
11 Switzerland 2 0.8%
12 South Africa 2 0.8%
13 Togo 1 0.4%
14 Italy 1 0.4%
15 Russia 1 0.4%