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 55 55.6%
2 United States 13 13.1%
3 France 10 10.1%
4 Germany 8 8.1%
5 Netherlands 7 7.1%
6 Tajikistan 2 2%
7 United Kingdom 2 2%
8 Russia 1 1%
9 India 1 1%