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 46 33.6%
2 China 40 29.2%
3 Netherlands 21 15.3%
4 Canada 9 6.6%
5 France 4 2.9%
6 Germany 4 2.9%
7 Japan 3 2.2%
8 Taiwan 3 2.2%
9 United Kingdom 2 1.5%
10 Sweden 2 1.5%
11 Korea, Republic of 1 0.7%
12 Poland 1 0.7%
13 Ghana 1 0.7%