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 United States 50 37.6%
2 China 25 18.8%
3 Singapore 14 10.5%
4 Netherlands 13 9.8%
5 Canada 9 6.8%
6 Denmark 4 3%
7 Germany 4 3%
8 United Kingdom 4 3%
9 Russia 3 2.3%
10 Malaysia 2 1.5%
11 Japan 2 1.5%
12 Korea, Republic of 1 0.8%
13 India 1 0.8%
14 Iran, Islamic Republic of 1 0.8%