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 241 58.8%
2 United States 89 21.7%
3 Germany 41 10%
4 Canada 18 4.4%
5 Netherlands 5 1.2%
6 Russia 3 0.7%
7 Sweden 2 0.5%
8 Romania 2 0.5%
9 2 0.5%
10 Hong Kong 2 0.5%
11 Ireland 2 0.5%
12 Malaysia 2 0.5%
13 Turkey 1 0.2%