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 261 46.9%
2 United States 187 33.6%
3 Germany 42 7.6%
4 Netherlands 26 4.7%
5 Hong Kong 11 2%
6 Canada 6 1.1%
7 Sweden 5 0.9%
8 Taiwan 4 0.7%
9 India 4 0.7%
10 Russia 4 0.7%
11 Korea, Republic of 3 0.5%
12 Denmark 2 0.4%
13 United Kingdom 1 0.2%