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 197 54.4%
2 United States 81 22.4%
3 Germany 43 11.9%
4 Hong Kong 20 5.5%
5 Russia 5 1.4%
6 Taiwan 5 1.4%
7 Canada 4 1.1%
8 Netherlands 4 1.1%
9 United Kingdom 2 0.6%
10 France 1 0.3%