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 122 46%
2 United States 65 24.5%
3 Netherlands 22 8.3%
4 Germany 13 4.9%
5 Russia 12 4.5%
6 Korea, Republic of 9 3.4%
7 France 8 3%
8 Mauritius 4 1.5%
9 Canada 3 1.1%
10 Philippines 2 0.8%
11 Hong Kong 1 0.4%
12 India 1 0.4%
13 Slovenia 1 0.4%
14 South Africa 1 0.4%
15 Switzerland 1 0.4%