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 139 51.5%
2 United States 68 25.2%
3 Germany 30 11.1%
4 Korea, Republic of 9 3.3%
5 Russia 5 1.9%
6 United Kingdom 4 1.5%
7 Japan 3 1.1%
8 Taiwan 3 1.1%
9 Singapore 2 0.7%
10 Hong Kong 2 0.7%
11 Italy 2 0.7%
12 France 2 0.7%
13 Turkey 1 0.4%