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 168 58.7%
2 United States 54 18.9%
3 Germany 34 11.9%
4 Canada 12 4.2%
5 Czech Republic 4 1.4%
6 Ukraine 3 1%
7 Austria 2 0.7%
8 New Zealand 2 0.7%
9 Singapore 2 0.7%
10 Sweden 2 0.7%
11 Switzerland 2 0.7%
12 Uzbekistan 1 0.3%