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 United States 14 32.6%
2 China 7 16.3%
3 Hong Kong 5 11.6%
4 Russia 3 7%
5 Slovakia 2 4.7%
6 Sweden 2 4.7%
7 Moldova, Republic of 2 4.7%
8 Netherlands 2 4.7%
9 Finland 2 4.7%
10 Brazil 2 4.7%
11 Canada 2 4.7%