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 Germany 27 37.5%
2 United States 26 36.1%
3 China 7 9.7%
4 Netherlands 5 6.9%
5 Singapore 2 2.8%
6 United Kingdom 2 2.8%
7 Canada 1 1.4%
8 Russia 1 1.4%
9 France 1 1.4%