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 30 31.6%
2 Germany 17 17.9%
3 China 12 12.6%
4 Canada 11 11.6%
5 United Kingdom 8 8.4%
6 Russia 5 5.3%
7 France 4 4.2%
8 Estonia 2 2.1%
9 India 2 2.1%
10 Korea, Republic of 1 1.1%
11 Lebanon 1 1.1%
12 Malaysia 1 1.1%
13 Brazil 1 1.1%