BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 43 58.9%
2 United States 11 15.1%
3 Germany 9 12.3%
4 Netherlands 4 5.5%
5 United Kingdom 2 2.7%
6 Singapore 1 1.4%
7 Sweden 1 1.4%
8 Japan 1 1.4%
9 France 1 1.4%