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 34 25.4%
2 Singapore 26 19.4%
3 China 25 18.7%
4 Netherlands 15 11.2%
5 Canada 9 6.7%
6 Korea, Republic of 6 4.5%
7 Sweden 6 4.5%
8 Germany 5 3.7%
9 Russia 5 3.7%
10 New Zealand 3 2.2%