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 189 51.1%
2 United States 108 29.2%
3 Germany 30 8.1%
4 Taiwan 18 4.9%
5 Hong Kong 10 2.7%
6 Russia 3 0.8%
7 Singapore 2 0.5%
8 South Africa 2 0.5%
9 United Kingdom 2 0.5%
10 Korea, Republic of 2 0.5%
11 Luxembourg 2 0.5%
12 Australia 2 0.5%