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 United States 49 52.1%
2 China 16 17%
3 Germany 8 8.5%
4 United Kingdom 6 6.4%
5 Canada 5 5.3%
6 Russia 4 4.3%
7 France 3 3.2%
8 Italy 1 1.1%
9 Moldova, Republic of 1 1.1%
10 Netherlands 1 1.1%