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 515 70.5%
2 United States 122 16.7%
3 Germany 49 6.7%
4 Canada 14 1.9%
5 Ireland 6 0.8%
6 Taiwan 5 0.7%
7 Singapore 4 0.5%
8 Norway 4 0.5%
9 France 4 0.5%
10 Belarus 2 0.3%
11 Hong Kong 2 0.3%
12 India 1 0.1%
13 Korea, Republic of 1 0.1%
14 Russia 1 0.1%