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 172 59.3%
2 Netherlands 31 10.7%
3 United States 26 9%
4 Germany 21 7.2%
5 France 16 5.5%
6 Korea, Republic of 7 2.4%
7 Japan 5 1.7%
8 South Africa 5 1.7%
9 Ireland 2 0.7%
10 Israel 1 0.3%
11 Canada 1 0.3%
12 Mauritius 1 0.3%
13 Russia 1 0.3%
14 Singapore 1 0.3%