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 181 76.1%
2 United States 25 10.5%
3 Germany 11 4.6%
4 Korea, Republic of 6 2.5%
5 Singapore 4 1.7%
6 South Africa 2 0.8%
7 Sweden 2 0.8%
8 United Kingdom 2 0.8%
9 Hong Kong 2 0.8%
10 India 2 0.8%
11 Netherlands 1 0.4%