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 72 38.1%
2 United States 41 21.7%
3 France 29 15.3%
4 Netherlands 24 12.7%
5 Germany 8 4.2%
6 Sweden 7 3.7%
7 Poland 3 1.6%
8 Russia 2 1.1%
9 Singapore 1 0.5%
10 India 1 0.5%
11 Canada 1 0.5%