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 164 56.6%
2 United States 57 19.7%
3 Germany 31 10.7%
4 Canada 24 8.3%
5 Russia 6 2.1%
6 Singapore 2 0.7%
7 Netherlands 2 0.7%
8 Philippines 1 0.3%
9 United Kingdom 1 0.3%
10 India 1 0.3%
11 Ireland 1 0.3%