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 53.5%
2 United States 52 18.4%
3 Germany 35 12.4%
4 Canada 28 9.9%
5 Hong Kong 5 1.8%
6 Taiwan 3 1.1%
7 Sweden 2 0.7%
8 Austria 2 0.7%
9 Russia 2 0.7%
10 Singapore 1 0.4%
11 Netherlands 1 0.4%