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 233 57.5%
2 United States 95 23.5%
3 Germany 35 8.6%
4 Canada 18 4.4%
5 Russia 9 2.2%
6 Hong Kong 4 1%
7 Japan 2 0.5%
8 Belarus 2 0.5%
9 Portugal 2 0.5%
10 Netherlands 1 0.2%
11 Singapore 1 0.2%
12 Sweden 1 0.2%
13 Turkey 1 0.2%
14 United Kingdom 1 0.2%