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 162 41.4%
2 United States 139 35.5%
3 Germany 41 10.5%
4 Canada 26 6.6%
5 Hong Kong 5 1.3%
6 Japan 4 1%
7 Netherlands 2 0.5%
8 Norway 2 0.5%
9 Belarus 2 0.5%
10 France 2 0.5%
11 Sweden 2 0.5%
12 Tajikistan 2 0.5%
13 Romania 1 0.3%
14 Slovakia 1 0.3%