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 United States 218 47.9%
2 China 177 38.9%
3 Germany 41 9%
4 Netherlands 3 0.7%
5 Russia 2 0.4%
6 Singapore 2 0.4%
7 Taiwan 2 0.4%
8 France 2 0.4%
9 Albania 2 0.4%
10 Hong Kong 2 0.4%
11 United Kingdom 2 0.4%
12 Canada 1 0.2%
13 Ukraine 1 0.2%