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 44 45.8%
2 United States 16 16.7%
3 Canada 13 13.5%
4 Netherlands 6 6.2%
5 Sweden 6 6.2%
6 Germany 3 3.1%
7 Denmark 2 2.1%
8 Mongolia 2 2.1%
9 Uganda 2 2.1%
10 Singapore 1 1%
11 Hong Kong 1 1%