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 155 57.2%
2 United States 49 18.1%
3 Germany 38 14%
4 Korea, Republic of 6 2.2%
5 Sweden 4 1.5%
6 Singapore 3 1.1%
7 Taiwan 3 1.1%
8 Nigeria 3 1.1%
9 Netherlands 2 0.7%
10 France 2 0.7%
11 Switzerland 2 0.7%
12 Brazil 1 0.4%
13 United Kingdom 1 0.4%
14 Ireland 1 0.4%
15 Russia 1 0.4%