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 China 52 53.6%
2 United States 18 18.6%
3 Germany 8 8.2%
4 Hong Kong 8 8.2%
5 Taiwan 3 3.1%
6 Russia 2 2.1%
7 India 2 2.1%
8 Japan 1 1%
9 Korea, Republic of 1 1%
10 Portugal 1 1%
11 Sweden 1 1%