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 212 49.8%
2 United States 137 32.2%
3 Germany 32 7.5%
4 Canada 20 4.7%
5 Hong Kong 8 1.9%
6 Taiwan 4 0.9%
7 Netherlands 3 0.7%
8 Austria 2 0.5%
9 Brazil 2 0.5%
10 Turkey 2 0.5%
11 France 1 0.2%
12 Singapore 1 0.2%
13 Sweden 1 0.2%
14 Iran, Islamic Republic of 1 0.2%