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 24 27.6%
2 China 14 16.1%
3 Sweden 13 14.9%
4 Netherlands 11 12.6%
5 Germany 8 9.2%
6 Korea, Republic of 7 8%
7 United Kingdom 4 4.6%
8 Singapore 3 3.4%
9 Hong Kong 2 2.3%
10 Taiwan 1 1.1%