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 238 58.2%
2 United States 95 23.2%
3 Germany 29 7.1%
4 Canada 23 5.6%
5 Hong Kong 9 2.2%
6 Japan 3 0.7%
7 Taiwan 3 0.7%
8 Egypt 2 0.5%
9 Belgium 2 0.5%
10 1 0.2%
11 Netherlands 1 0.2%
12 Russia 1 0.2%
13 Switzerland 1 0.2%
14 Ukraine 1 0.2%