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 63.5%
2 United States 37 13.7%
3 Germany 34 12.5%
4 Canada 12 4.4%
5 Singapore 7 2.6%
6 France 2 0.7%
7 India 2 0.7%
8 Lao People's Democratic Republic 2 0.7%
9 Netherlands 1 0.4%
10 Russia 1 0.4%
11 Georgia 1 0.4%