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 249 59.9%
2 United States 85 20.4%
3 Germany 44 10.6%
4 France 16 3.8%
5 Hong Kong 3 0.7%
6 Russia 3 0.7%
7 Sweden 3 0.7%
8 Taiwan 3 0.7%
9 United Kingdom 2 0.5%
10 Iran, Islamic Republic of 2 0.5%
11 Australia 2 0.5%
12 Austria 1 0.2%
13 Canada 1 0.2%
14 Singapore 1 0.2%
15 Ukraine 1 0.2%