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 151 54.9%
2 United States 57 20.7%
3 Germany 30 10.9%
4 Canada 12 4.4%
5 Hong Kong 8 2.9%
6 Russia 4 1.5%
7 Brazil 4 1.5%
8 Netherlands 3 1.1%
9 Sweden 2 0.7%
10 France 2 0.7%
11 Taiwan 1 0.4%
12 Finland 1 0.4%