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 158 56.6%
2 Germany 36 12.9%
3 Netherlands 36 12.9%
4 United States 31 11.1%
5 Canada 4 1.4%
6 Sweden 2 0.7%
7 Switzerland 2 0.7%
8 United Kingdom 2 0.7%
9 Norway 2 0.7%
10 Hong Kong 2 0.7%
11 Finland 1 0.4%
12 France 1 0.4%
13 Romania 1 0.4%
14 Russia 1 0.4%