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 212 56.2%
2 United States 105 27.9%
3 Germany 41 10.9%
4 Russia 7 1.9%
5 United Kingdom 3 0.8%
6 Sweden 2 0.5%
7 France 2 0.5%
8 Australia 1 0.3%
9 Canada 1 0.3%
10 Taiwan 1 0.3%
11 Ukraine 1 0.3%
12 Singapore 1 0.3%