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 305 70.6%
2 United States 63 14.6%
3 Germany 35 8.1%
4 Canada 12 2.8%
5 Netherlands 5 1.2%
6 Singapore 3 0.7%
7 Ireland 3 0.7%
8 Sweden 2 0.5%
9 Turkey 2 0.5%
10 United Kingdom 1 0.2%
11 Slovakia 1 0.2%