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 175 59.9%
2 United States 54 18.5%
3 Germany 27 9.2%
4 Russia 9 3.1%
5 Taiwan 7 2.4%
6 Hong Kong 4 1.4%
7 United Kingdom 3 1%
8 Spain 3 1%
9 Japan 2 0.7%
10 New Zealand 2 0.7%
11 Singapore 2 0.7%
12 2 0.7%
13 Albania 2 0.7%