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 41 41%
2 Netherlands 15 15%
3 United States 12 12%
4 Canada 10 10%
5 Germany 5 5%
6 Bulgaria 3 3%
7 Korea, Republic of 3 3%
8 Hong Kong 2 2%
9 India 2 2%
10 Japan 2 2%
11 Russia 2 2%
12 United Kingdom 2 2%
13 Mauritius 1 1%