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 206 56.7%
2 United States 93 25.6%
3 Germany 36 9.9%
4 Canada 12 3.3%
5 Netherlands 5 1.4%
6 Poland 2 0.6%
7 Hong Kong 2 0.6%
8 Ireland 2 0.6%
9 Taiwan 2 0.6%
10 Japan 1 0.3%
11 Romania 1 0.3%
12 Sweden 1 0.3%