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 61.8%
2 United States 45 15.9%
3 Germany 39 13.8%
4 Netherlands 6 2.1%
5 United Kingdom 4 1.4%
6 Taiwan 3 1.1%
7 Hong Kong 3 1.1%
8 Russia 2 0.7%
9 Canada 2 0.7%
10 Brazil 1 0.4%
11 Egypt 1 0.4%
12 Ireland 1 0.4%
13 Ukraine 1 0.4%