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 142 71.4%
2 United States 31 15.6%
3 Germany 11 5.5%
4 Romania 3 1.5%
5 2 1%
6 Hong Kong 2 1%
7 Korea, Republic of 2 1%
8 Sweden 2 1%
9 United Kingdom 2 1%
10 Brazil 1 0.5%
11 Singapore 1 0.5%