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 117 46.1%
2 United States 47 18.5%
3 Sweden 29 11.4%
4 Germany 15 5.9%
5 Netherlands 14 5.5%
6 France 12 4.7%
7 Russia 8 3.1%
8 Mongolia 4 1.6%
9 Singapore 3 1.2%
10 Hong Kong 2 0.8%
11 India 1 0.4%
12 Korea, Republic of 1 0.4%
13 Canada 1 0.4%