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 235 63.2%
2 United States 51 13.7%
3 Netherlands 37 9.9%
4 Germany 35 9.4%
5 Canada 3 0.8%
6 Hong Kong 2 0.5%
7 Ireland 2 0.5%
8 Singapore 2 0.5%
9 South Africa 2 0.5%
10 United Kingdom 1 0.3%
11 Korea, Republic of 1 0.3%
12 Finland 1 0.3%