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 207 55.6%
2 United States 92 24.7%
3 Germany 47 12.6%
4 Russia 4 1.1%
5 United Kingdom 4 1.1%
6 Taiwan 3 0.8%
7 Singapore 3 0.8%
8 Macao 3 0.8%
9 Netherlands 2 0.5%
10 Italy 2 0.5%
11 France 2 0.5%
12 Spain 1 0.3%
13 Ukraine 1 0.3%
14 Canada 1 0.3%