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 55 56.7%
2 China 18 18.6%
3 Germany 7 7.2%
4 United Kingdom 4 4.1%
5 Russia 3 3.1%
6 Taiwan 3 3.1%
7 Hong Kong 2 2.1%
8 France 2 2.1%
9 Macao 1 1%
10 Moldova, Republic of 1 1%
11 Estonia 1 1%